Version:2.3.0
NumericalData
ResourceID
spase://GBO/NumericalData/Ascension.Island/Magnetometer/PT1M/WDC_FORMAT
ResourceHeader
ResourceName
Ascension Island Magnetometer 1-min Data in WDC Format
ReleaseDate
2019-05-05 12:34:56Z
Description
Ascension Island Magnetometer data, 1-min time resoluion, in WDC format. Magnetic Field Vector Element List: XYZF. Note that the list of magnetic field elements that appear in the data set may change over the course of time. For instance, many stations have shifted from DHZ to the XYZ representation of the magnetic field. The time history listed below summarizes changes in element content. A description of the WDC Data Exchange Format for 1-min magnetic field data is included at the end of this data product description.
Acknowledgement
Please acknowledge: British Geological Survey for providing the data observations, and the British Geological Survey, World Data Center for Geomagnetism, Edinburgh for providing access to the data.
Contacts
InformationURL
Name
The Geomagnetic Data Master Catalog at the WDC for Geomagnetism, Edinburgh
URL
Description
Web site for access to magnetometer data hosted by the World Data Center for Geomagnetism, Edinburgh
PriorIDs
spase://VMO/NumericalData/Ascension/Magnetometer/PT1M
spase://VMO/NumericalData/Ascension.Island/Magnetometer/PT1M/WDC_FORMAT
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
The WDC Geomagnetic Data Master Catalog Repository
URL
Description
The Geomagnetic Data Master Catalog hosted by the British Geological Survey, World Data Center for Geomagnetism, Edinburgh.
Format
Text
Encoding
ZIP
DataExtent
Quantity
1196352
Units
bytes
Per
P1M
Acknowledgement
Please thank the British Geological Survey, World Data Center, Edinburgh for use of data from the WDC Geomagnetic Data Master Catalog.
ProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
1994-01-01 00:00:00.000
StopDate
2010-12-31 23:59:00.000
Note
Some data gaps may be present. If a gap is present at the beginning or end of the file, the time span start and stop dates could be inaccurate as they are assigned assuming an absence of such gaps.
Cadence
PT1M
ObservedRegion
Earth.Surface
Keywords
ground station
magnetometer
magnetic field
magnetogram
Ascension Island
WDC Station Code: ASC
1-minute
WDC Format
Parameter #1
Name
Universal Time
ParameterKey
Time
Description
Time is expressed using a five column format with the following order: year, month, day, hour, and minute, each stored in interger format. The time columns are the first five columns (1,2,3,4,5) in the flat file.
Cadence
PT1M
Structure
Size
5
Description
Universal Time expressed using a 5-column year, month, day, hour, minute representation
Element
Element
Element
Element
Element
Support
Parameter #2
Name
North-South Horizontal Magnetic Field Component
ParameterKey
X
Description
Ascension Island North-South Horizontal Magnetic Field Component, positive Northward
Cadence
PT1M
Units
nT
UnitsConversion
10^9 >T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
CGM
ValidMin
-70000
ValidMax
70000
FillValue
999999
Field
Qualifier
Component.I
FieldQuantity
Magnetic
Parameter #3
Name
East-West Horizontal Magnetic Field Component
ParameterKey
Y
Description
Ascension Island East-West Horizontal Magnetic Field Component, positive Eastward
Cadence
PT1M
Units
nT
UnitsConversion
10^9 >T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
CGM
ValidMin
-70000
ValidMax
70000
FillValue
999999
Field
Qualifier
Component.J
FieldQuantity
Magnetic
Parameter #4
Name
Vertical Magnetic Field Component
ParameterKey
Z
Description
Ascension Island Vertical Magnetic Field Component, positive upward in the Southern hemisphere, positive downward in the Northern hemisphere
Cadence
PT1M
Units
nT
UnitsConversion
10^9 >T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
CGM
ValidMin
-70000
ValidMax
70000
FillValue
999999
Field
Qualifier
Component.K
FieldQuantity
Magnetic
Parameter #5
Name
Magnetic Field Magnitude
ParameterKey
F
Description
Ascension Island Magnetic Field Magnitude
Cadence
PT1M
Units
nT
UnitsConversion
10^9 >T
ValidMin
0
ValidMax
70000
FillValue
999999
Field
Qualifier
Magnitude
FieldQuantity
Magnetic