OR/14/014 Data release: Difference between revisions

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|+ Table 2&nbsp;&nbsp;&nbsp;&nbsp;Contents of ASCII file Magnetic data
|+ Table 2&nbsp;&nbsp;&nbsp;&nbsp;Contents of ASCII file Magnetic data.
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|+Table 3 Contents of ASCII file Radiometric data
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|+ Table 3&nbsp;&nbsp;&nbsp;&nbsp;Contents of ASCII file Radiometric data.
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Additionally, gridded and georeferenced images of standard geophysical derived parameters are also available. These will be released for download via a BGS TellusSW data portal in the near future. Two of the standard images of the data are shown below.
Additionally, gridded and georeferenced images of standard geophysical derived parameters are also available. These will be released for download via a BGS TellusSW data portal in the near future. Two of the standard images of the data are shown below.
[[Image:14014 fig5.jpg|thumb|left|500px|'''Figure 5''' Total Magnetic Intensity (TMI), IGRF corrected to provide the final TMI anomaly data. Equal-area colour normalisation.]]


[[Image:14014 fig6.jpg|thumb|left|500px|'''Figure 6'''&nbsp;&nbsp;&nbsp;&nbsp;Ternary radiometric image formed from the Potassium (%K), Thorium (eTh) and Uranium (eU) ground concentration estimates.]]
[[Image:14014 fig5.jpg|thumb|center|500px|'''Figure 5'''&nbsp;&nbsp;&nbsp;&nbsp;Total Magnetic Intensity (TMI), IGRF corrected to provide the final TMI anomaly data. Equal-area colour normalisation.]]
 
[[Image:14014 fig6.jpg|thumb|center|500px|'''Figure 6'''&nbsp;&nbsp;&nbsp;&nbsp;Ternary radiometric image formed from the Potassium (%K), Thorium (eTh) and Uranium (eU) ground concentration estimates.]]




[[Category:OR/14/014 TellusSW: airborne geophysical data and processing report | 04]]
[[Category:OR/14/014 TellusSW: airborne geophysical data and processing report | 04]]

Latest revision as of 13:20, 22 April 2022

Beamish D and White J. 2014. TellusSW: airborne geophysical data and processing report . British Geological Survey Internal Report, OR/14/014.

The contractor delivered data are to be released, in simplified form, as ASCII comma-separated value (.csv) files. The data format of these files are shown in Tables 2 (Magnetic) and 3 (Radiometric), below.

Table 2    Contents of ASCII file Magnetic data.
Channel Description Units
X_BNG Easting (X) BNG (OSGB 1936) m
Y_BNG Northing (Y) BNG (OSGB 1936) m
Lat Latitude in WGS84 m ddd.mm.ss.ss
Lon Longitude in WGS84 ddd.mm.ss.ss
flight Survey flight number
date Survey flight date yyyy/mm/dd
Line Line number
Igrf International Geomagnetic Reference Field nT
altimeter Radar altimeter height from surface m
processed_horizontal_gradient Measured Horizontal Gradient (processed) nT/m
levelled_mag Total Magnetic Intensity (Levelled) nT
levelled_mag_igrf_corrected Residual Magnetic Intensity (Levelled) nT
Table 3    Contents of ASCII file Radiometric data.
Channel Description Units
X_BNG Easting (X) BNG (OSGB 1936) m
Y_BNG Northing (Y) BNG (OSGB 1936) m
flight Survey flight number
date Survey flight date yyyy/mm/dd
Line Line number
altimeter Radar altimeter height from surface m
processed_total_count Final corrected total count cps
processed_potassium Final corrected potassium %K
processed_uranium Final corrected uranium ppm (eU)
processed_thorium Final corrected thorium Ppm (eTh)

Additionally, gridded and georeferenced images of standard geophysical derived parameters are also available. These will be released for download via a BGS TellusSW data portal in the near future. Two of the standard images of the data are shown below.

Figure 5    Total Magnetic Intensity (TMI), IGRF corrected to provide the final TMI anomaly data. Equal-area colour normalisation.
Figure 6    Ternary radiometric image formed from the Potassium (%K), Thorium (eTh) and Uranium (eU) ground concentration estimates.