verde.datasets.fetch_rio_magnetic
Contents
verde.datasets.fetch_rio_magnetic¶
- verde.datasets.fetch_rio_magnetic()[source]¶
Fetch total-field magnetic anomaly data from Rio de Janeiro, Brazil.
Warning
All sample datasets in Verde are deprecated and will be removed in Verde v2.0.0. The tutorials/examples will transition to using Ensaio instead.
These data were cropped from the northwestern part of an airborne survey of Rio de Janeiro, Brazil, conducted in 1978. The data are made available by the Geological Survey of Brazil (CPRM) through their GEOSGB portal.
The anomaly is calculated with respect to the IGRF field parameters listed on the table below. See the original data for more processing information.
IGRF for year 1978.3 at 500 m height
Latitude
Longitude
Intensity (nT)
Declination
Inclination
-22º15’
-42º15’
23834
-19º19’
-27º33’
If the file isn’t already in your data directory, it will be downloaded automatically.
- Returns
data (
pandas.DataFrame) – The magnetic anomaly data. Columns are longitude, latitude, total-field magnetic anomaly (nanoTesla), observation height above the WGS84 ellipsoid (in meters), flight line type (LINE or TIE), and flight line number for each data point.
See also
setup_rio_magnetic_mapUtility function to help setup a Cartopy map.
![[DEPRECATED] Magnetic data from Rio de Janeiro](../../_images/sphx_glr_rio_magnetic_thumb.png)