<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <head>
        <meta content="672" name="orgcode"/>
        <meta content="Robert.M.Candey" name="rno"/>
        <meta content="Tamara.J.Kovalick" name="content-owner"/>
        <meta content="Tamara.J.Kovalick" name="webmaster"/>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
        <meta http-equiv="Cache-Control" content="max-age=86400"/>
        <title>SPASE Resource Description</title>
        <script type="application/ld+json">{
      "@context": "https://schema.org/",
      "@type" : "Dataset",
      "name": "SESAME VLF/ELF Logger Experiment, Key Parameters",
        
      "dateModified": "2025-12-04",
      
    "identifier": "spase://NASA/NumericalData/SESAME/KeyParameters/VLF-ELF/PT60S",
        
    "creditText": "",
    "description": "This set of key parameters from the SESAME (Satellite Experiments Simultaneous with Antarctic Measurements) ground-based experiment contains omni-directional intensities (dB) in 2 narrow passband filters centred on 1kHz and 3kHz. Please see reference: Dudeney, J. R. et. al., Satellite Experiments Simultaneous with Antarctic Measurements (SESAME), Space Science Reviews, Volume 71, Issue 1-4, pp. 705-742, 1995. ",
    "abstract": "This set of key parameters from the SESAME (Satellite Experiments Simultaneous with Antarctic Measurements) ground-based experiment contains omni-directional intensities (dB) in 2 narrow passband filters centred on 1kHz and 3kHz. Please see reference: Dudeney, J. R. et. al., Satellite Experiments Simultaneous with Antarctic Measurements (SESAME), Space Science Reviews, Volume 71, Issue 1-4, pp. 705-742, 1995. ",
    
        "spatialCoverage": [
      {
          "@type": "Place",
          "alternateName": "Earth.NearSurface.Ionosphere"
      }],
    
    "temporalCoverage": "1992-07-22T00:00:00.000Z/2001-10-17T23:59:59.000Z",

    "genre": "Waves",
    "keywords": [  ],
    "license":  "https://spdx.org/licenses/CC0-1.0.html",

    "audience":{
        "@type": "Audience",
        "audienceType": ["Space Physicist", "Space Community", "Data Scientists", "Machine Learning Users"]
    },
    "distribution": [
        { 
        "@type": "DataDownload",
        "encodingFormat": [
            "application/x-cdf"
        ],
        "contentUrl": "ftps://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/"
    },
     { 
        "@type": "DataDownload",
        "encodingFormat": [
            "application/x-cdf"
        ],
        "contentUrl": "https://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/"
    },
     { 
        "@type": "DataDownload",
        "encodingFormat": [
            "text/plain"
        ],
        "contentUrl": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=SE_K0_VLF&amp;index=sp_phys"
    },
     { 
        "@type": "DataDownload",
        "encodingFormat": [
            "application/octet-stream"
        ],
        "contentUrl": "https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/SE_K0_VLF/clientLibraryExample/"
    },
     { 
        "@type": "DataDownload",
        "encodingFormat": [
            "text/csv"
        ],
        "contentUrl": "https://cdaweb.gsfc.nasa.gov/hapi"
    }
    ]
    }
    </script>
        <script type="application/rsl+xml">
            <rsl xmlns="https://rslstandard.org/rsl"><!--This license information is for the SPASE metadata only.  The actual data/software may be covered by a different license.-->
                <content url="">
                    <license>
                        <permits type="usage">all</permits>
                        <payment type="free">
                            <standard>https://spdx.org/licenses/CC0-1.0.html</standard>
                        </payment>
                    </license>
                </content>
            </rsl>
        </script>
        <xhtml:style xmlns:xhtml="http://www.w3.org/1999/xhtml">

* {
   margin: 0;
   padding: 0;
   border: 0;
   outline: 0;
   font-size: 100%;
   vertical-align: baseline;
   background: transparent;
}

body {
	background-color: #f0f0f0; // #eaf5e9; #277bc0; #d3d3f9;
	color: black;
	font-family: Verdana, Arial, sans-serif; 
	font-size:12px; 
	line-height: 1.2;
}
 
h1,h2,h3,h4,h5,h6 {
	margin-top: 10px;
	margin-bottom: 10px;
	font-weight:bold;
}

h1 {
	font-size: 140%;
}

h2 {
	font-size: 120%;
}

h3 {
	font-size: 110%;
	font-style: oblique;
}

p {
	margin-bottom: 0.75ex;
}

a:link,
a:visited {
   color: #277bc0;/* #339;*/
   font-weight:bolder; 
   text-decoration:none; 
}

a:hover {
   color: blue;
   font-weight:bolder; 
   text-decoration:underline; 
}

ul {
	list-style: square inside ;
	margin-bottom: 0.75ex;
}

table {
   border: thin solid #666;
	margin-top: 5px;
	margin-bottom: 10px;
}

table.nested {
	margin-left: 2em;
}

thead,tbody {
   border: thin solid #666;
}

td, th {
   margin: 0;
	padding: 2px 2px 2px 2px;
}

th {
	font-style: oblique;
}

h1.detail {
}

.header {
	width:100%;
	padding: 1em 10px 1em 10px;
	color: #fff;
	background: #5e87b0;
	font-weight: bold;
	text-shadow: 0 /*{b-bar-shadow-x}*/ 1px /*{b-bar-shadow-y}*/ 1px /*{b-bar-shadow-radius}*/ #3e6790 /*{b-bar-shadow-color}*/;
	text-align: center;
	font-size: 16px;
	display: block;
	text-overflow: ellipsis;
	overflow: hidden;
	white-space: nowrap;
	outline: 0 !important;
}

.usa-banner {
    padding-left: 10px;
    overflow: hidden;
}

.official-websites {
    float: left;
    width: 50%;
}

.secure-websites {
    float: left;
    width: 50%;
}

.image-left {
    float: left;
    margin-right: 10px;
}

.footer {
    width: 100%;
    padding: 1em 10px 1em 10px;
    /*
    color: #fff;
    */
    color: Black;
    background: #5e87b0;
    font-weight: bold;
    font-size: 16px;
    display: table;
}
div.footer-item {
    float: left;
    padding-left: 1em;
    padding-right: 1em;
}
/* this does not work
a.footer-item:link {
    all: revert;
}
a.footer-item:visited {
    all: revert;
}
a.footer-item:hover {
    all: revert;
}
*/
.inset {
	margin-left: 22%;
}

.page {
	padding: 10px 3% 10px 3%;
}

div.indent {
    margin-left: 2em;
}

div.term {
	margin-top: 5px;
	padding-left: 5px;
	border-top: 1px solid #DDD;
	font-weight: bold;
}

div.definition {
	margin-left: 5ex;
}

div.value {
	margin-left: 5ex;
}

div.product {
	background-color: white;
	border: thin solid #333;
	padding: 10px 15px 10px 15px;
	margin-top: 10px;
}

div.parameter {
	margin-top: 10px;
	padding: 5px 10px 10px 10px;
	border: thin dotted #333;
	background-color: #ebebeb;
}

#toc {
   border: thin solid #333;
   background-color: #F5F5F5; 
   padding: 10px 15px 10px 15px;
   margin-left: 5%;
   margin-right: 5%;
   margin-bottom: 30px;
}

#toc ol, ul, li {
	padding-left: 5ex;
}

#toc ol {
	list-style-type: decimal;
	list-style-position: inside; 
}

#toc ul {
	list-style-type: square;
	list-style-position: inside; 
}

p.version {
  float: right;
  width: 100%;
  margin-top: 5px;
  text-align: right;
  font-size: x-small;
}

p.right {
  float: right;
  text-align: right;
}

.box-title {
	font-size: 120%;
	font-weight:bold;
	text-align: center;
	border-bottom: 1px solid #DDD;
}

ul.list {
	list-style-position: outside;
	padding-left: 1.5em;
}

li.list {
	text-align: left;
	padding-left: 0px;
}

.no-break {
	white-space: nowrap;
}

p.author {
	font-size: 120%;
}

div.brand {
	width: 100%;
	text-align: right;
}

div.abstract {
	display: table;
	position: relative;
	width: 100%;
}

div.citation {
}

div.access {
	float: left;
	width: 20%;
	background-color: white;
	border: thin solid #333;
	padding: 5px 5px 5px 5px;
	margin-right: 1em;
}

a.xml-logo:link,
a.xml-logo:visited {
   background: #ff6600;
   color: #ffffff;
   font-weight:bolder; 
   text-decoration:none; 
   padding-left:2px;
   padding-right:2px;
}
a.xml-logo:hover {
   text-decoration:underline; 
}
button {
  background-color: #5e87b0;
  border: none;  /* 2px solid black;  */
  border-radius: 8px;
  color: white;
  padding: 3px 5px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
}
button.usa-banner-button {
    background-color: initial;
    border: initial;
    border-radius: initial;
    color: initial;
    padding: initial;
    text-align: initial;
    text-decoration: underline;
    display: initial;
}
	  </xhtml:style>
        <xhtml:script xmlns:xhtml="http://www.w3.org/1999/xhtml">
	    async function getResponseText(response) {
	        document.body.style.cursor = 'default';
	        return await response.text();
	    }
	    function getVersionedBibTeX(bibtex) {
	        /* Add version field as suggested by August (Gus) Muench, Journals Data Editor,
	        American Astronomical Society (email dated 7/7/25) */
	        const accessVersion = ", version={Accessed on " + currentIsoDateStr + "}";
	        const modifiedBibtex = bibtex.substring(0, bibtex.lastIndexOf("}")) + accessVersion + "}";
	        return modifiedBibtex;
	    }
	    function getBlob(text) {
	        return new Blob([text], { type: "text/plain"});
	    }
	    function clipboardAlert(text) {
	        alert(text + "\nCopied to clipboard");
	    }
	    function clipCitation(doi) {
	        document.body.style.cursor = 'wait';
            let url = "https://citation.doi.org/format?doi=" + doi.replace("https://doi.org/", "") +
                String.fromCodePoint(38) + "style=bibtex" + String.fromCodePoint(38) + "lang=en-US";
            const text = new ClipboardItem({
                    "text/plain": fetch(url)
                    .then(getResponseText)
                    .then(getVersionedBibTeX)
                    .then(getBlob)
            });
            navigator.clipboard.write([text]);
            
            text.getType("text/plain")
                .then(getResponseText)
                .then(clipboardAlert);
        }
        function toggle_usa_banner_details() {
            const details = document.getElementById("usa-banner-details");
            const indicator = document.getElementById("usa-banner-indicator");
            if (details.style.display === "none") {
                details.style.display = "block";
                indicator.textContent = "^";
            }
            else {
                details.style.display = "none";
                indicator.textContent = "v";
            }
        }
	    const monthName=new Array("January","February","March","April","May","June","July","August","September","October","November","December");
	    let currentDate = new Date();
	    let currentIsoDateStr = currentDate.toISOString().substring(0, 10);
	    let currentDateStr = currentDate.getFullYear() + '-' + monthName[currentDate.getMonth()] + '-' + currentDate.getDate();
	  </xhtml:script>
    </head>
    <xhtml:body xmlns:xhtml="http://www.w3.org/1999/xhtml">
        <xhtml:div>
            <xhtml:a id="top"/>
        </xhtml:div>
        <xhtml:div class="usa-banner">
            <xhtml:p>
                <xhtml:img class="usa-banner__header-flag" height="10px" width="20px" src="/logos/us_flag_small.png" alt="USA flag"/> An official website of the United States government
                <xhtml:button class="usa-banner-button" onclick="toggle_usa_banner_details()">Here's how you know</xhtml:button> <xhtml:span id="usa-banner-indicator">v</xhtml:span>
            </xhtml:p>
            <xhtml:div id="usa-banner-details" style="display: none">
                <xhtml:div class="official-websites">
                    <xhtml:div>
                        <xhtml:img class="image-left" src="/logos/icon-dot-gov.svg" alt="dot gov icon"/>
                        <xhtml:p>
                            <xhtml:b>Official websites use .gov</xhtml:b>
                        </xhtml:p>
                        <xhtml:p>A <xhtml:b>.gov</xhtml:b> websites belongs to an official government organization in the United States</xhtml:p>
                    </xhtml:div>
                </xhtml:div>
                <xhtml:div class="secure-websites">
                    <xhtml:img class="image-left" src="/logos/icon-https.svg" alt="HTTPS icon"/>
                    <xhtml:p>
                        <xhtml:b>Secure .gov website use HTTPS</xhtml:b>
                    </xhtml:p>
                    <xhtml:p>A <xhtml:b>lock</xhtml:b> (<xhtml:img src="/logos/usa-banner-lock.svg" alt="lock icon"/>) or <xhtml:b>https://</xhtml:b> means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.</xhtml:p>
                </xhtml:div>
            </xhtml:div>
        </xhtml:div>
        <xhtml:div class="header">
            <xhtml:div class="middle">HDPWS</xhtml:div>
        </xhtml:div>
        <xhtml:div class="page">
            <xhtml:div class="spase">
                <xhtml:div class="abstract">
                    <xhtml:div class="access">
                        <xhtml:p class="box-title">
                    Data Access
                </xhtml:p>
                        <xhtml:ul class="list">
                            <xhtml:li class="list">
                                <xhtml:a target="_blank" href="ftps://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/">FTPS from SPDF (not with most browsers)</xhtml:a>
                            </xhtml:li>
                            <xhtml:li class="list">
                                <xhtml:a target="_blank" href="https://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/">HTTPS from SPDF</xhtml:a>
                            </xhtml:li>
                            <xhtml:li class="list">
                                <xhtml:a target="_blank" href="https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=SE_K0_VLF&amp;index=sp_phys">CDAWeb</xhtml:a>
                            </xhtml:li>
                            <xhtml:li class="list">
                                <xhtml:a target="_blank" href="https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/SE_K0_VLF/clientLibraryExample/">WebService:
                          CDAWeb Programmatic Data Access</xhtml:a>
                            </xhtml:li>
                            <xhtml:li class="list">
                                <xhtml:a target="_blank" href="https://cdaweb.gsfc.nasa.gov/registry/hdp/hapi/hapiHtml.html#url=https://cdaweb.gsfc.nasa.gov/hapi&amp;id=SE_K0_VLF">HAPI: CDAWeb HAPI Server</xhtml:a>
                            </xhtml:li>
                        </xhtml:ul>
                    </xhtml:div>
                    <xhtml:div class="citation inset">
                        <xhtml:h1>
                            <xhtml:a name="spase://NASA/NumericalData/SESAME/KeyParameters/VLF-ELF/PT60S">SESAME VLF/ELF Logger Experiment, Key Parameters</xhtml:a>
                        </xhtml:h1>
                        <xhtml:p>
                            <xhtml:div class="term">ResourceID</xhtml:div>
                            <xhtml:div class="definition">spase://NASA/NumericalData/SESAME/KeyParameters/VLF-ELF/PT60S</xhtml:div>
                        </xhtml:p>
                        <xhtml:p>
                            <xhtml:div class="term">Description</xhtml:div>
                            <xhtml:div class="definition">This set of key parameters from the SESAME (Satellite Experiments Simultaneous with Antarctic Measurements) ground-based experiment contains omni-directional intensities (dB) in 2 narrow passband filters centred on 1kHz and 3kHz. Please see reference: Dudeney, J. R. et. al., Satellite Experiments Simultaneous with Antarctic Measurements (SESAME), Space Science Reviews, Volume 71, Issue 1-4, pp. 705-742, 1995.</xhtml:div>
                        </xhtml:p>
                        <xhtml:p>
                            <xhtml:div class="term">Metadata Rights</xhtml:div>
                            <xhtml:div class="definition">CC0-1.0: 
              <xhtml:a href="https://spdx.org/licenses/CC0-1.0.html" target="_blank">Creative Commons Zero v1.0 Universal</xhtml:a>
                                <xhtml:div class="term">Note</xhtml:div>
                                <xhtml:div class="definition">CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
              </xhtml:div>
                            </xhtml:div>
                        </xhtml:p>
                    </xhtml:div>
                </xhtml:div>
                <xhtml:div>
                    <xhtml:p class="right">
                        <xhtml:a target="_blank" href="/WS/hdp/1/Spase?ResourceID=spase://NASA/NumericalData/SESAME/KeyParameters/VLF-ELF/PT60S&amp;Format=spase_xml" download="PT60S.xml">View XML</xhtml:a> |
              <xhtml:a target="_blank" href="https://spase-editor.heliocloud.org/?edit=https://heliophysicsdata.gsfc.nasa.gov/WS/hdp/1/Spase?ResourceID=spase://NASA/NumericalData/SESAME/KeyParameters/VLF-ELF/PT60S&amp;Format=spase_xml">Edit</xhtml:a>
                    </xhtml:p>
                    <xhtml:h1 class="detail">Details</xhtml:h1>
                </xhtml:div>
                <xhtml:div>
                    <xhtml:div class="product">
                        <xhtml:p class="version">Version:2.7.1</xhtml:p>
                        <xhtml:h1>NumericalData</xhtml:h1>
                        <xhtml:div class="term">ResourceID</xhtml:div>
                        <xhtml:div class="definition">spase://NASA/NumericalData/SESAME/KeyParameters/VLF-ELF/PT60S</xhtml:div>
                        <xhtml:div class="term">NamingAuthority</xhtml:div>
                        <xhtml:div class="definition">NASA</xhtml:div>
                        <xhtml:div class="term">ResourceType</xhtml:div>
                        <xhtml:div class="definition">NumericalData</xhtml:div>
                        <xhtml:div class="term">ResourceHeader</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">ResourceName</xhtml:div>
                            <xhtml:div class="definition">SESAME VLF/ELF Logger Experiment, Key Parameters</xhtml:div>
                            <xhtml:div class="term">ReleaseDate</xhtml:div>
                            <xhtml:div class="definition">2025-12-04 13:31:27Z</xhtml:div>
                            <xhtml:div class="term">RevisionHistory</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">RevisionEvent</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:div class="term">ReleaseDate</xhtml:div>
                                    <xhtml:div class="definition">2021-04-27 15:38:11Z</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
                                    <xhtml:div class="definition">Only known prior ReleaseDate of the metadata</xhtml:div>
                                </xhtml:div>
                                <xhtml:div class="term">RevisionEvent</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:div class="term">ReleaseDate</xhtml:div>
                                    <xhtml:div class="definition">2025-12-04 13:31:27Z</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
                                    <xhtml:div class="definition">Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB</xhtml:div>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Description</xhtml:div>
                            <xhtml:div class="definition">This set of key parameters from the SESAME (Satellite Experiments Simultaneous with Antarctic Measurements) ground-based experiment contains omni-directional intensities (dB) in 2 narrow passband filters centred on 1kHz and 3kHz. Please see reference: Dudeney, J. R. et. al., Satellite Experiments Simultaneous with Antarctic Measurements (SESAME), Space Science Reviews, Volume 71, Issue 1-4, pp. 705-742, 1995.</xhtml:div>
                            <xhtml:div class="term">Contacts</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:table class="nested" cellspacing="0">
                                    <xhtml:tr>
                                        <xhtml:th/>
                                        <xhtml:th class="center">Role</xhtml:th>
                                        <xhtml:th class="center">Person</xhtml:th>
                                        <xhtml:th class="center">StartDate</xhtml:th>
                                        <xhtml:th class="center">StopDate</xhtml:th>
                                        <xhtml:th class="center">Note</xhtml:th>
                                    </xhtml:tr>
                                    <xhtml:tbody>
                                        <xhtml:tr>
                                            <xhtml:td>1.</xhtml:td>
                                            <xhtml:td>GeneralContact</xhtml:td>
                                            <xhtml:td>
                                                <xhtml:a target="_blank" href="https://spase-metadata.org/SMWG/Person/Keith.Morrison.html">spase://SMWG/Person/Keith.Morrison</xhtml:a>
                                            </xhtml:td>
                                            <xhtml:td/>
                                            <xhtml:td/>
                                            <xhtml:td/>
                                        </xhtml:tr>
                                    </xhtml:tbody>
                                </xhtml:table>
                            </xhtml:div>
                            <xhtml:div class="term">PriorIDs</xhtml:div>
                            <xhtml:div class="definition">spase://VSPO/NumericalData/P_SESAME_K0_VLF</xhtml:div>
                            <xhtml:div class="definition">spase://VSPO/NumericalData/SESAME/KeyParameters/VLF-ELF/PT60S</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">AccessInformation</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">RepositoryID</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:a href="https://spase-metadata.org/SMWG/Repository/NASA/GSFC/SPDF.html">spase://SMWG/Repository/NASA/GSFC/SPDF</xhtml:a>
                            </xhtml:div>
                            <xhtml:div class="term">Availability</xhtml:div>
                            <xhtml:div class="definition">Online</xhtml:div>
                            <xhtml:div class="term">AccessRights</xhtml:div>
                            <xhtml:div class="definition">Open</xhtml:div>
                            <xhtml:div class="term">RightsList</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Rights</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:div class="term">SchemeURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifierScheme</xhtml:div>
                                    <xhtml:div class="definition">SPDX</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifier</xhtml:div>
                                    <xhtml:div class="definition">CC0-1.0</xhtml:div>
                                    <xhtml:div class="term">RightsURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/CC0-1.0.html</xhtml:div>
                                    <xhtml:div class="term">RightsName</xhtml:div>
                                    <xhtml:div class="definition">Creative Commons Zero v1.0 Universal</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
                                    <xhtml:div class="definition">CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</xhtml:div>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">FTPS from SPDF (not with most browsers)</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="ftps://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/">ftps://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/</xhtml:a>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">HTTPS from SPDF</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="https://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/">https://spdf.gsfc.nasa.gov/pub/data/sesame/vlf/</xhtml:a>
                                </xhtml:div>
                                <xhtml:div class="term">Description</xhtml:div>
                                <xhtml:div class="definition">In CDF via HTTP from CDAWeb</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Format</xhtml:div>
                            <xhtml:div class="definition">CDF</xhtml:div>
                            <xhtml:div class="term">Acknowledgement</xhtml:div>
                            <xhtml:div class="definition">Please acknowledge data provider, J.R. Dudeney at the British Antarctic Survey and SPDF when using these data.</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">AccessInformation</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">RepositoryID</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:a href="https://spase-metadata.org/SMWG/Repository/NASA/GSFC/SPDF.html">spase://SMWG/Repository/NASA/GSFC/SPDF</xhtml:a>
                            </xhtml:div>
                            <xhtml:div class="term">Availability</xhtml:div>
                            <xhtml:div class="definition">Online</xhtml:div>
                            <xhtml:div class="term">AccessRights</xhtml:div>
                            <xhtml:div class="definition">Open</xhtml:div>
                            <xhtml:div class="term">RightsList</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Rights</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:div class="term">SchemeURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifierScheme</xhtml:div>
                                    <xhtml:div class="definition">SPDX</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifier</xhtml:div>
                                    <xhtml:div class="definition">CC0-1.0</xhtml:div>
                                    <xhtml:div class="term">RightsURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/CC0-1.0.html</xhtml:div>
                                    <xhtml:div class="term">RightsName</xhtml:div>
                                    <xhtml:div class="definition">Creative Commons Zero v1.0 Universal</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
                                    <xhtml:div class="definition">CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</xhtml:div>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">CDAWeb</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=SE_K0_VLF&amp;index=sp_phys">https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=SE_K0_VLF&amp;index=sp_phys</xhtml:a>
                                </xhtml:div>
                                <xhtml:div class="term">ProductKey</xhtml:div>
                                <xhtml:div class="definition">SE_K0_VLF</xhtml:div>
                                <xhtml:div class="term">Description</xhtml:div>
                                <xhtml:div class="definition">Plots, lists, and files from CDAWeb.  Name of the data resource:SE_K0_VLF</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Format</xhtml:div>
                            <xhtml:div class="definition">Text</xhtml:div>
                            <xhtml:div class="term">AccessDirectoryTemplate</xhtml:div>
                            <xhtml:div class="definition">https://cdaweb.gsfc.nasa.gov/pub/data/sesame/vlf/$Y</xhtml:div>
                            <xhtml:div class="term">AccessFilenameTemplate</xhtml:div>
                            <xhtml:div class="definition">se_k0_vlf_$Y$m$d_$v.cdf</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">AccessInformation</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">RepositoryID</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:a href="https://spase-metadata.org/SMWG/Repository/NASA/GSFC/SPDF.html">spase://SMWG/Repository/NASA/GSFC/SPDF</xhtml:a>
                            </xhtml:div>
                            <xhtml:div class="term">Availability</xhtml:div>
                            <xhtml:div class="definition">Online</xhtml:div>
                            <xhtml:div class="term">AccessRights</xhtml:div>
                            <xhtml:div class="definition">Open</xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">CDAWeb Programmatic Data Access</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/SE_K0_VLF/clientLibraryExample/">https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/SE_K0_VLF/clientLibraryExample/</xhtml:a>
                                </xhtml:div>
                                <xhtml:div class="term">Style</xhtml:div>
                                <xhtml:div class="definition">WebService</xhtml:div>
                                <xhtml:div class="term">ProductKey</xhtml:div>
                                <xhtml:div class="definition">SE_K0_VLF</xhtml:div>
                                <xhtml:div class="term">Description</xhtml:div>
                                <xhtml:div class="definition">Access to this data from common programming environments.  Note: this AccessInformation element was added by HDPWS.</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Format</xhtml:div>
                            <xhtml:div class="definition">Binary</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">AccessInformation</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">RepositoryID</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:a href="https://spase-metadata.org/SMWG/Repository/NASA/GSFC/SPDF.html">spase://SMWG/Repository/NASA/GSFC/SPDF</xhtml:a>
                            </xhtml:div>
                            <xhtml:div class="term">Availability</xhtml:div>
                            <xhtml:div class="definition">Online</xhtml:div>
                            <xhtml:div class="term">AccessRights</xhtml:div>
                            <xhtml:div class="definition">Open</xhtml:div>
                            <xhtml:div class="term">RightsList</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Rights</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:div class="term">SchemeURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifierScheme</xhtml:div>
                                    <xhtml:div class="definition">SPDX</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifier</xhtml:div>
                                    <xhtml:div class="definition">CC0-1.0</xhtml:div>
                                    <xhtml:div class="term">RightsURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/CC0-1.0.html</xhtml:div>
                                    <xhtml:div class="term">RightsName</xhtml:div>
                                    <xhtml:div class="definition">Creative Commons Zero v1.0 Universal</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
                                    <xhtml:div class="definition">CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</xhtml:div>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">CDAWeb HAPI Server</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="https://cdaweb.gsfc.nasa.gov/hapi">https://cdaweb.gsfc.nasa.gov/hapi</xhtml:a>
                                </xhtml:div>
                                <xhtml:div class="term">Style</xhtml:div>
                                <xhtml:div class="definition">HAPI</xhtml:div>
                                <xhtml:div class="term">ProductKey</xhtml:div>
                                <xhtml:div class="definition">SE_K0_VLF</xhtml:div>
                                <xhtml:div class="term">Description</xhtml:div>
                                <xhtml:div class="definition">Web Service to this product using the HAPI interface.</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Format</xhtml:div>
                            <xhtml:div class="definition">CSV</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">ProviderProcessingLevel</xhtml:div>
                        <xhtml:div class="definition">Calibrated</xhtml:div>
                        <xhtml:div class="term">InstrumentIDs</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:a target="_blank" href="https://spase-metadata.org/SMWG/Instrument/SESAME/VLF-ELF.html">spase://SMWG/Instrument/SESAME/VLF-ELF</xhtml:a>
                        </xhtml:div>
                        <xhtml:div class="term">MeasurementType</xhtml:div>
                        <xhtml:div class="definition">Waves</xhtml:div>
                        <xhtml:div class="term">TemporalDescription</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">TimeSpan</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">StartDate</xhtml:div>
                                <xhtml:div class="definition">1992-07-22 00:00:00.000Z</xhtml:div>
                                <xhtml:div class="term">StopDate</xhtml:div>
                                <xhtml:div class="definition">2001-10-17 23:59:59.000Z</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Cadence</xhtml:div>
                            <xhtml:div class="definition">PT60S</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">ObservedRegion</xhtml:div>
                        <xhtml:div class="definition">Earth.NearSurface.Ionosphere</xhtml:div>
                    </xhtml:div>
                </xhtml:div>
            </xhtml:div>
        </xhtml:div>
        <xhtml:div class="footer">
            <xhtml:div class="footer">
                <xhtml:img class="image-left" src="/logos/nasa-logo.svg" alt="NASA Insignia"/>
                <xhtml:div class="footer-item">Contact SPDF: <xhtml:a style="all:revert" href="mailto:NASA-SPDF-Support@nasa.onmicrosoft.com?subject=HDPWS SPASE">NASA-SPDF Feedback/Support</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">Responsible NASA Official: <xhtml:a style="all: revert" href="mailto:Robert.M.Candey@nasa.gov">Robert M. Candey</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">Site Editor: <xhtml:a style="all:revert" href="mailto:NASA-SPDF-Support@nasa.onmicrosoft.com">Tami Kovalick</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://ror.org/00ryjtt64">SPDF ROR ID</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.re3data.org/repository/r3d100010168">SPDF re3data ID</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.nasa.gov/about/">About NASA</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.nasa.gov/accessibility/">Accessibility</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.nasa.gov/foia/">FOIA</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.nasa.gov/no-fear-act/">No FEAR Act</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.nasa.gov/privacy/">Privacy Policy</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.nasa.gov/vulnerability-disclosure-policy/">Vulnerability Disclosure Policy</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:span>Last Updated: 2025-12-04</xhtml:span>
                </xhtml:div>
            </xhtml:div>
        </xhtml:div>
    </xhtml:body>
</html>