Gravity Images for Northern Mainland Nova Scotia
DP ME 111, Version 2, 2006, Bouguer Gravity
and Residual Bouguer Gravity Images collectively covering
NTS sheets 11E/01, 11E/02, 11E/03, 11E/04, 11E/05, 11E/06,
11E/07, 11E/08, 11E/09, 11E/10, 11E/11, 11E/12, 11E/13, 11E/14,
11E/15, 11E/16, 11F/04, 11F/05, 11F/12, 11F/13, 21H/01, 21H/02,
21H/07, 21H/08, 21H/09, 21H/10 and 21H/16, TGI-2 project,
northern Nova Scotia, by M. S. King, 2004. Available in TIFF
and JPEG formats, and also PDF's of OFM ME 2005-90
and 2005-91.
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Format and Projection
Data Format Technical Notes
Metadata
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DP ME 118
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Abstract
This data set consists of one
TIFF, one JPEG image and one PDF Open File Map of bouguer gravity and residual bouguer
gravity covering most of northern mainland Nova Scotia.
The total field bouguer gravity
and residual bouguer gravity map images were produced from data
contained in Nova Scotia Department of Natural Resources, Open File Report ME 1995-005. Gravity station spacing is variable throughout
the map sheet and artifacts related to station spacing may be
present in the final map image. The total field data set contains
the cumulative measured response from surface features to upper
crustal sources. The residual gravity image was derived from the
total field data by subtracting long-wavelength (~> 8-10km)
signal from the total field data to enhance near surface (<
5km) features. Station spacing restricts grid cell size to 500m
with a 8000m blankng distance, which restricts near surface spatial
resolution in the published map image. The 24-bit colour images
were produced with a 25m pixel size. Shading was from the southeast
at 35 degrees above the horizon. For complete details an Open
File Report will be forthcoming from M. S. King later in 2004.
The images were produced by contractor M. S. King using
funds provided under the Natural Resources Canada and Nova Scotia
Department of Natural Resources joint project 'Mapping, Mineral
and Energy Resource Evaluation, Central Nova Scotia', part of
Natural Resources Canada's Targeted Geoscience Initiative (TGI-2)
2003-2005. |
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The information on the PDF map comes from a variety of government and non-government
sources. NSDNR accepts no liability for any errors or deficiencies on this map.
This map should not be used for legal purposes.
The PDF map is intended for use at the published scale of 1:50 000.
The DATA is provided to the USER on an "as is" basis, without warranties of any kind, express
or implied. The entire risk as to the quality and accuracy of the DATA is with the USER and the USER shall
use his/her own judgment in making use of the DATA or drawing conclusions based upon it. DNR shall not be
liable to the USER, his/her clients, servants, agents, contractors, assigns, or to any other person for any
loss or damage of any kind including personal injury or death arising from the use of the DATA or
accompanying written materials, or from errors, deficiencies or faults therein, whether such damage is
caused by negligence or otherwise. If errors or omissions are found in the DATA, the USER will notify DNR.
The terms and conditions of the license accompany the downloaded digital product.
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A Sample Total Field Bouguer Gravity Image
(Sample image - Click to view details in a smaller area)
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| Format |
Portable Document Format (PDF), Tag Image File Format (TIFF),
Joint Photographic Experts Group (JPEG) and TXT files compressed
in self-extracting EXE/ZIP files (more information on
data formats) |
| Size |
PDF - 11.0 and 11.4 MB (compressed), 13.4 and 13.8 MB (uncompressed)
TIFF - 10.8 and 11.1 MB (compressed), 250.9 MB (uncompressed)
JPEG - 4.0 and 4.1 MB(compressed), 4.1 and 4.2 MB (uncompressed)
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| Projection |
The TIFF and JPEG images are in six-degree Universal
Transverse Mercator (UTM) projection, Zone 20, Central
Meridian 63° 00' West using the North American Datum
of 1983 (NAD83).
The PDF maps are are in six-degree Universal Transverse Mercator
(UTM) projection, Zone 20, Central Meridian 63° 00'
West using the North American Datum of 1927 (NAD27). |
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Downloading Instructions
The data files have been compressed using PKZIP into a single, self-extracting EXE file.
- Read the Licence before accepting the data.
- Download the self-extracting EXE file to the desired location on your hard drive.
- Double click or "RUN" the EXE file and the data files will be unzipped automatically.
The EXE file can also be opened in WinZip to view and extract the compressed files in
the data set.
On UNIX platforms, the unzip command will extract the compressed files in the
EXE.
A readme file and a copy of the licence agreement are also included with each
data set. |
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Download DP ME 111 |
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