world magnetic model calculator.pdf
TRANSCRIPT
4/1/2015 World Magnetic Model Calculator
http://www.geomag.bgs.ac.uk/data_service/models_compass/wmm_calc.html 1/2
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LegendD =
DeclinationI =
InclinationX = NorthIntensity
Y = EastIntensity
H = HorizontalIntensity
Z = VerticalIntensity
F = TotalIntensity
World Magnetic Model 2015 CalculatorUse the tool below to compute values for the geomagnetic field and secular variation for a given set ofcoordinates and date. This calculator uses the World Magnetic Model.Choose the geodetic latitude and longitude either by entering the coordinates into the form below(decimal degrees may be entered into the 'degrees' field), or by simply clicking the location on the map.The altitude and date may be set using the appropriate form fields.Clicking on the 'Show result on map' button will display the values for the chosen coordinates in a popup window. These results may be saved by clicking on the 'Save' button allowing you to compare valuesfrom a number of locations.As this is based on a web service you can also obtain results in XML format using an HTTP GETrequest http://app.geomag.bgs.ac.uk/wmm/compute?latitude=80&longitude=240&altitude=0&date=20170702, modifying the query string parameters asappropriate.
Geodetic Coordinates
Latitude: 4 degrees 0 minutes 0 seconds
Longitude: 122 degrees 31 minutes 0 seconds
Altitude: 0 km above MSL.
Date
Date: 20150401 (YYYY.YY OR YYYYMMDD) Please note: Date must be between 2015.0 and 2020.0
Show result on map
Latitude Longitude Altitude Date4.000 122.517 0.00 2015.25
Comp D I X Y H Z FMF 1.086 24.262 38572 731 38579 17388 42316SV 6.2 5.8 21.9 68.7 20.6 69.2 9.6
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Latitude Longitude Altitude Date-4.000 122.517 0.00 2015.25
Comp D I X Y H Z FMF 1.086 -24.262 38572 731 38579 -17388 42316SV -6.2 5.8 21.9 -68.7 20.6 69.2 -9.6
Map data ©2015 Google Imagery ©2015 TerraMetricsReport a map error
4/1/2015 World Magnetic Model Calculator
http://www.geomag.bgs.ac.uk/data_service/models_compass/wmm_calc.html 2/2
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© NERC 2015
MF = Main Field degreeseast
degreesdown nT nT nT nT down nT
SV = SecularVariation arcmin/year arcmin/year nT/year nT/year nT/year nT/year nT/year
Please note that for Internet Explorer 10 and earlier there may be occasional erratic behaviour from theclickable map and the popup window. For very old versions of Internet Explorer the results may not be visible.