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ISO 19139 Metadata Implementation Specification GML3.2
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Bell_BMC_Km.ers
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7563237.500000
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Projected
GCS_North_American_1983_CSRS
Linear Unit: Meter (1.000000)
NAD_1983_CSRS_New_Brunswick_Stereographic
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FALSE
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ER Mapper
TRUE
continuous
floating point
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20251219
09453300
20251219
09453300
ISO19139
Amirabbas Karbalaeiramezanali
GSB
amirabbas.karbalaeiramezanali@gnb.ca
Serge Allard
GSB
Serge.Allard@gnb.ca
Serge Alard
Serge Allard
Serge Allard
Hernan Ugalde
hernan.ugalde@dipgeosciences.com
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
Bell_BMC_Km.ers
1
-66.592009
-65.669630
47.650641
47.065967
This dataset represents the processed and tensor-interpolated FTG/AGG gravity tensor component grid for the Bell BMC2010 survey in New Brunswick, gridded at...
This dataset represents the processed and tensor-interpolated FTG/AGG gravity tensor component grid for the Bell BMC2010 survey in New Brunswick, gridded at 25-meter resolution in NAD83 NB Stereographic projection.The dataset provides one of the gravity tensor component grids derived from the Bell BMC2010 FTG/AGG survey. The dataset was generated by processing raw gravity gradiometry profile data with a density of 2.8 g/cc, building a tensor from all components, and interpolating it into a regular grid. Individual tensor components were extracted, and from the relevant components, gravity acceleration (Tz) was reconstituted. A Shape Index was calculated from the tensor data to enhance structural interpretation. The dataset supports high-resolution geophysical analysis, structural mapping, and mineral exploration. It is provided in NAD83 NB Stereographic double projection at 25-meter resolution.The dataset was produced from raw AGG/FTG profile data by constructing a gravity tensor using all measured components and interpolating it into a regular 25-meter grid. Individual tensor components were extracted, and the Tz gravity acceleration component was reconstituted from Txz, Tyz, and Tzz. Because AGG/FTG data do not measure long wavelengths, the Tz grid was conformed to the GGMplus satellite gravity by applying a 20 km high-pass filter to the Tz component and a 20 km low-pass filter to the satellite Bouguer field, then combining both. The tensor-derived Shape Index was also calculated to highlight local structural features. The final grids were exported in ER Mapper format.Data created Sept 2025.
NB Dept of Natural Resources, GSB Section
2772
25.000000
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25.000000
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1
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Band_1
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Raster Dataset
dataset
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