20251217
13263600
1.0
ISO 19139 Metadata Implementation Specification GML3.2
FALSE
150000000
5000
Ground_compiled_1VD.ers
002
2235500.000000
2812500.000000
7229500.000000
7870500.000000
1
Projected
GCS_North_American_1983_CSRS
Linear Unit: Meter (1.000000)
NAD_1983_CSRS_New_Brunswick_Stereographic
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32
FALSE
None
1
ER Mapper
FALSE
continuous
floating point
-999999
20251219
08381500
20251219
08381500
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
Ground_compiled_1VD.ers
1
-70.170234
-62.165276
49.831386
43.998311
The dataset represents the first vertical derivative (1VD) of the complete Bouguer gravity anomaly (density 2.8 g/cc) for New Brunswick, gridded at 1 km...
The dataset represents the first vertical derivative (1VD) of the complete Bouguer gravity anomaly (density 2.8 g/cc) for New Brunswick, gridded at 1 km resolution in NAD83 NB Stereographic projection.This dataset provides the first vertical derivative of the complete Bouguer anomaly calculated using a reduction density of 2.8 g/cc. The 1VD enhances short-wavelength features in the gravity field, improving the visibility of near-surface geological structures such as faults, contacts, and intrusive bodies. The grid covers the province of New Brunswick and is intended to support regional geological interpretation, structural mapping, and mineral exploration applications. The data is provided in NAD83, NB Stereographic double projection.The dataset was generated from ground gravity stations downloaded from the GSC server. The gravity data were reprocessed in September 2025 by recalculating Free Air and Bouguer anomalies using SRTM topography, applying terrain corrections (density 2.8 g/cc), and creating complete Bouguer grids. The complete Bouguer anomaly grid (CBoug_28) was then transformed using a first vertical derivative filter to produce the CBoug_28_1VD_NBStereo grid, which was subsequently gridded at 1 km cell size.Data created Sept 2025.
NB Dept of Natural Resources, GSB Section
577
1000.000000
641
1000.000000
2
1
0
2235500.000000 7229500.000000
2235500.000000 7870500.000000
2812500.000000 7870500.000000
2812500.000000 7229500.000000
2524000.000000 7550000.000000
Band_1
0.030383
-0.033174
32
Raster Dataset
dataset
EPSG
6.2(9.3.0.0)
20251219
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