Table Of Contents
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| Identification Information |
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| Citation Information |
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Title: |
DP ME 154, Version 2, 2006. Nova Scotia Gravity Database
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Originator: |
B. E. Fisher |
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Publication Date: |
2006 |
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Edition: |
1 |
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Data Type: |
vector digital data |
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Series: |
Digital Product |
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Issue Identification: |
DP ME 154 |
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Publisher: |
Nova Scotia Department of Natural Resources, Mineral Resources Branch |
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Publication Place: |
Halifax, Nova Scotia, Canada |
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Online linkage: |
https://novascotia.ca/natr/meb/download/dp154.asp |
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| Data Description |
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Abstract: |
This digital product includes all the stations that were collected as part of the Nova Scotia Department of Natural Resources, Mineral Resources Branch (MRB) Open File Report 95-005, "Reprocessing of Nova Scotia Gravity Data from the NSRFC Gravity Database (1952-1988) by K. Howells and E. D. Clarke", as well as an additional 633 gravity stations and some quality control fields added by Steve King under contract to MRB in early 2005. This data was part of Assessment Report AR ME 1997-101, "Salt, Stewiacke area, Hants and Colchester Counties, Nova Scotia. Report on a geological review of the property, an assessment of previous gravity and seismic surveys, an analysis of previous gauging data, and the collection of river oceanographic data", by Geomarine Associates Ltd. This product includes station locations, associated bouguer gravity values and other attributes located in the onshore and offshore areas of Nova Scotia. The digital product was created by MRB staff. |
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Purpose: |
The purpose of this data set is to create a database of gravity stations and the measurements taken at them in the province of Nova Scotia. It is hoped that more gravity stations will be added to this database over time as data becomes available and time allows for it's incorporation. |
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Supplemental Information: |
Data Set ID = d154ns;
Data Class = gravity;
Source ID = 10172 |
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Language |
English |
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Data Credit: |
Nova Scotia Department of Natural Resources |
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Data Environment |
ArcInfo 8.3 on a SUN Sparc 20 workstation running Solaris 7 |
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Native Data Set Format |
ArcView 3.2a shapefiles |
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| Contact Information |
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Jeff Poole |
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Nova Scotia Department of Natural Resources, Mineral Resources Branch |
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Digital Information Services Supervisor |
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1701 Hollis Street, P.O. Box 698 |
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Halifax, Nova Scotia, Canada |
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B3J 2T9 |
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(phone) 902-424-8139 |
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(fax)
902-424-7735 |
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Staff Contact |
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Available:
9:00 a.m. to 5:00 p.m. |
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| Time Period Information |
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Beginning Date: |
2004 |
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Ending Date: |
Present |
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Currentness Reference: |
publication date |
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| Data Status |
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Progress: |
Complete |
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Update Frequency: |
As needed |
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| Spatial Domain |
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West Coordinate: |
-66.5 |
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East Coordinate: |
-59 |
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North Coordinate: |
48.0 |
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South Coordinate: |
42.5 |
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G-Poly coordinates |
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G-Poly Pair (1 of 5) |
48.0, -66.5 |
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G-Poly Pair (2 of 5) |
48.0, -59 |
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G-Poly Pair (3 of 5) |
42.5, -59 |
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G-Poly Pair (4 of 5) |
42.5, -66.5 |
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G-Poly Pair (5 of 5) |
48.0, -66.5 |
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| Keywords |
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Theme Keywords: |
Geologic & Geophysical; geoscientific Information; Downloadable Data; digital databases; digital products; digital geoscience data; geophysics; gravity; bouguer gravity; gravity surveys; gravity anomalies; Geophysics (GP); Gravity (GV); GV Databases |
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Place Keywords: |
Nova Scotia |
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| Access and Usage Information |
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Access Constraints: |
The access constraints are contained in the following License Agreement and the User Constraints which the user must agree to before using the data. A copy of the License Agreement and GSC User Constraints is included with the digital product. The License Agreement reads as follows
For the data contained on this medium (media), or any part thereof, herein called the DATA
Between the PROVINCE OF NOVA SCOTIA as represented by the Nova Scotia Department of Natural Resources, hereinafter referred to as NR&R
and the recipient of the data hereinafter called the USER
For good consideration, the receipt of which is acknowledged, NR&R licences the non-exclusive use of the digital DATA to the USER on the following terms and conditions.
TERMS AND CONDITIONS
NR&R remains the owner of the DATA and is not assigning copyright privileges to the USER.
The USER agrees to acknowledge NR&R as the source of the DATA, if using or distributing it in its original form, whether in whole or in part, or as part of a value added product.
NR&R reserves the right to modify and/or update the DATA without obligations to notify the USER.
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.
NR&R 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 NR&R.
This Licence is the entire Agreement between the parties and supersedes all previous Agreements or understandings between NR&R and the USER hereto, whether written or oral, in connection with or incidental to the DATA. This Licence shall be binding upon the parties hereto and each of their executors, administrators, successors and assigns and shall ensure to the benefit of such executors, administrators, successors and authorized assigns.
This Licence must be included with the DATA if the USER copies, resells, or re-distributes the DATA whether in whole or in part.
This Licence can be terminated by NR&R at any time. Upon such termination, the USER shall refrain from using the DATA and destroy all copies and backups in the USER'S possession.
This Licence is in effect once the USER reads and accepts the Terms and Conditions of this Licence. If the USER is unable or unwilling to fully comply with these terms and conditions, the USER must refrain from using the DATA. By using the DATA, the USER acknowledges that he/she was aware of the terms and conditions of this Licence when he/she accepted it, understood them, and agreed to be bound by them."
A copy of the terms and conditions of the license are available with the downloaded product. |
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Use Constraints: |
Any constraints on the use of the data are contained in the above license agreement. The terms and conditions of the license accompany the downloaded digital product. A statement of some use constraints can be viewed in the technical prerequisites.
NOTICE
Users of the gravity data in NSNR&R OFR 95-005 and DP ME 154 do not have the right to
distribute or sell digital gravity from the National Gravity Database (NGDB) that may be
included in OFR 95-005 and must purchase NGDB gravity from the Geophysical Data Center,
GSC, Ottawa under a sole use basis to make enhanced products for sale.
Products incorporating NGDB data from OFR 95-005 or DP ME 154 must include an
appropriate acknowledgment of the source of the data, e.g. for NGDB gravity data the source and
ownership rests with:
Natural Resources Canada, Geomatics Canada, Geodetic Survey Division, 615 Booth
Street, Ottawa, Ontario, K1A 0E9.
Products incorporating NSNR&R OFR 95-005 or DP ME 154 gravity data must include an
appropriate acknowledgment of the source of the data. |
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| Browse Graphic Information |
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Filename: |
none |
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Description: |
none at this time |
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| Security Information |
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Classification System: |
none |
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Classification: |
Unclassified |
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Handling Description: |
none |
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| Cross Reference Information |
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| Cross Reference (1 of 1) |
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Title: |
OFR ME 95-005, Reprocessing of Nova Scotia Gravity Data from the NSRFC Gravity Database (1952-1988) |
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Originator: |
K. Howells, E. D. Clarke |
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Publication Date: |
31 March 1995 |
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Data Form: |
document |
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Other Citation: |
NSRFC Geophysical Report 1-95.
This document was originally supplied with 4 floppy disks (3.5") that contained the digital data. The data on these disks is contained in DP ME 154 along with new gravity data. |
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Series: |
Open File Reports |
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Issue: |
OFR ME 95-005 |
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Publication Place: |
Halifax, Nova Scotia, Canada |
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Publisher: |
Nova Scotia Department of Natural Resources |
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| Data Quality Information |
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| Positional Accuracy |
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Positional Accuracy Report: |
There may be positional accuracy errors in the digital data that come from the original data collection. The data set contains data gathered from numerous surveys and the accuracy may vary between these. In January 2004 some inquires were received about the quality of some of the data contained in OFR ME 95-005. Steve King, a local geophysical contractor, was provided a contract to review the data and flag questionable data. In his e-mail to MRB one comment refered to questional positional accuracy. He stated:
I have added a quality ("Q") column: 1= good point; 0 = suspect point for some glaring errors. Note, that I have not inspected every point and there is not enough original control data for anyone to do this. Therefore it is somewhat subjective but I believe necessary; still without implying any absolute level of quality assuance. In a further description of the 'Q' field he indicated that a 0 value referred to a questionable gravity value or position.
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 from it. |
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Attribute Accuracy Report: |
In January 2004 inquires were received by MRB about the quality of some of the data contained in OFR ME 95-005. Steve King, a local geophysical contractor, was provided a contract to review the data and flag questionable data. Following is an excerpt provided by Steve to help identify questionable data. He outlines 5 points on the quality of the data:
A - STN_STATUS: Status description as per Howells and Clarke (1995): there are no "0" or "3" values and "4" values correspond to a questionable offshore data set. Values "1" and "2" correspond to station and grid surveys respectively.
B - I have added a quality ("Q") column: 1= good point; 0 = suspect point for some glaring errors. Note, that I have not inspected every point and there is not enough original control data for anyone to do this. Therefore it is somewhat subjective but I believe necessary; still without implying any absolute level of quality assuance.
C - To query the database to return the more accurate data tied to the national gravity net execute the following query which should generate 34,786 points:
- "NN_TIE=1 and STN_STATUS<4 and Q=1"
D - To query the database for grid surveys not tied to the national net execute the following query:
- "STN_STATUS=2 and NN_TIE=0";
- There are several relative surveys in the database not tied to the national gravity net; however, these data may be useful for detailed studies.
E - There are 633 archived stations added to the 2004 version of the Nova Scotia Gravity database in the Shubenacadie area. There are 125 not referenced to the National Gravity Net (NN_TIE=0).
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 from it. |
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| Source Information |
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| Source (1 of 2) |
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Title: |
OFR ME 95-005, Reprocessing of Nova Scotia Gravity Data from the NSRFC Gravity Database (1952-1988) |
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Originator: |
K. Howells, E. D. Clarke |
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Publication Date: |
31 March 1995 |
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Publication Time: |
Unknown |
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Data Form: |
tabular digital data |
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Other Citation: |
NSRFC Geophysical Report 1-95
This document was originally supplied with 4 floppy disks (3.5") that contained the digital data. The data on these disks is contained in DP ME 154 along with new gravity data. |
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Series Name: |
Open File Report |
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Issue Identification: |
OFR 95-005 |
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Publication Place: |
Halifax, Nova Scotia, Canada |
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Publisher: |
Nova Scotia Department of Natural Resources |
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Scale Denominator: |
none |
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Source Media: |
disk |
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Citation Abbreviation: |
OFR ME 95-005 |
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Source Contribution: |
Digital gravity point data contained on 4 floppy disks (3.5" disks labelled UTM data) provided as part of OFR ME 95-005 were used to create digital product DP ME 154. This set of 4 disks contained XY values as 6 degree UTM NAD27 coordinates. Four other disks containing the same data with latitude and longitude coordinates was not used. |
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Currentness Reference: |
publication date |
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Currentness Date: |
31 March 1995 |
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| Source (2 of 2) |
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Title: |
Salt, Stewiacke area, Hants and Colchester Counties, Nova Scotia. Report on a geological review of the property, an assessment of previous gravity and seismic surveys, an analysis of previous gauging data, and the collection of river oceanographic data. |
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Originator: |
Alan Ruffman |
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Publication Date: |
1997 |
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Data Form: |
document |
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Other Citation: |
Geostorage Associates Partnership Assessment Report for the Year 1 work required on the Shubenacadie-Stewiacke Salt Deposit, Hants and Colchester Counties, Nova Scotia, Special Licence 3/96, N.T. S., 11E3B and 11E3C, Geostorage Associates Partnership, Halifax, Nova Scotia, Geomarine Associates Ltd. Project No. 86-36(NS), submitted to the Government of Nova Scotia, Department of Natural Resources, Halifax, Nova Scotia, October 2, 265 pp., including 6 figures and 10 appendices. |
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Series Name: |
Assessment Reports |
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Issue Identification: |
AR ME 1997-101 |
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Publication Place: |
Halifax, Nova Scotia |
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Publisher: |
Geomarine Associates Ltd. |
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Scale Denominator: |
none |
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Source Media: |
disc |
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Citation Abbreviation: |
Assessment Report for Special Exploration License 3/96 |
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Source Contribution: |
This report contained a 3.5" floppy disk contaning 2 sets of gravity data:
1 - 1975 data from St. Joseph Exploration Limited;
2 - 1981 data from 2 unnamed oil companies.
A letter (dated October 2, 1997) from Alan Ruffman, Geomarine Associates Ltd, to Bob Boehner, NSNR&R, requested that the data contained in this assessment report be included in the Nova Scotia Gravity Database. |
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Currentness Reference: |
publication date |
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Currentness Date: |
1997 |
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| Processing Step Information |
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| Processing Step (1 of 5) |
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Description: |
Open File Report 95-005 included 8 floppy disks, containing digital gravity data, which were provided as part of the report. There were 2 sets of 4 disks each. Each set of 4 disks contained the gravity data points which comprised OFR 95-005. One set contained coordinates in 6 degree UTM NAD27 and the other in latitude / longitude. Each disk contained a single file with the data in a ASCII comma delimited format. |
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Software and Version: |
unknown |
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Date: |
1995 |
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Contact Person: |
(see Contact Information)
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| Processing Step (2 of 5) |
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Description: |
Brian Fisher took the four files from the UTM disks and combined them into a sinlge ASCII file and then converted the data into both a DBF format and an ArcView shapefile. |
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Software and Version: |
MS Excel and ArcView |
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Date: |
around 1997 |
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Contact Person: |
(see Contact Information)
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| Processing Step (3 of 5) |
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Description: |
In January 2004 a contract was given to a local geophysical contractor, Steve King, to review the quality of data contained in OFR 95-005 and to add 633 new gravity data points contained in an assessment report for special exploration licence 3/96 (AR ME 1997-101). The data for the assessment report was supplied to NSNR&R by Alan Ruffman, Geomarine Associates Ltd., in a letter to NSNR&R October 2, 1997. Steve King combined the data into a single spreadsheet and added some fields to the tables identifying accuracy concerns with some of the data points. A description of the results of this work can be found in the positional accuracy section of this document.
Brian Fisher supplied the OFR 95-005 data to Steve King in a DBF format and a copy of the disks provided by Geomarine.
On January 27, 2004 Steve King, supplied NSNR&R with the new database containing new records and fields in a MS Excel spreadsheet called NS_GRAV_2004.XLS. |
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Software and Version: |
unknown |
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Date: |
January 2004 |
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Contact Person: |
(see Contact Information)
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| Processing Step (4 of 5) |
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Description: |
In October 2004 Brian Fisher took the excel spreadsheet called NS_GRAV_2004.XLS and imported it into ArcView. The data was then converted into a shapefile. Brian then created a new digital product called r154ns. This was done because new gravity maps created as part of the TGI-2 project used the new database and we needed a way to reference the data used to create the maps. NSNR&R also wanted to release the new gravity database to the public and create a Nova Scotia Gravity Database that data could be added to over time.
The NSNR&R MRB standard GIS fields were added to the database at this time. |
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Software and Version: |
ArcView 3.2a |
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Date: |
October 2004 |
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Contact Person: |
(see Contact Information)
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| Processing Step (5 of 5) |
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Description: |
In August 2006, Version 2 of digital product DP ME 154 was released. The data was converted from the UTM zone 20 NAD27 projection and datum to UTM zone 20 NAD83 coordinates. No other changes were made to the data. |
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Software and Version: |
ArcInfo 8.3 |
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Date: |
August 2006 |
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Contact Person: |
(see Contact Information)
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| Spatial Data Organization Information |
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Spatial Reference Method: |
Point and Vector |
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| Spatial Reference Information |
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Data Projection: |
Universal Transverse Mercator |
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Zone: |
20
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Scale Factor at Central Meridian: |
0.9996
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Longitude at Central Meridian: |
-63.0
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Latitude of Projection Origin: |
0
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False Easting: |
500000
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False Northing: |
0
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Geographic Coordinate System: |
GCS_North_American_1983
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Projected Coordinate System: |
NAD_1983_UTM_Zone_20N
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Datum: |
North American Datum of 1983
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Ellipsoid: |
Geodetic Reference System 80
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Semi-Major Axis: |
6378137.0
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Denominator Of Flattening Axis: |
288.257222
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| Entity Attribute Information |
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| Overview Description |
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Dataset Overview: |
The data set represents the Nova Scotia Gravity Database. The data set contains two shapefiles. The first contains gravity stations (r154nsgr) and the second a neatline around the data set (r154nsnl). |
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Entity/Attribute Overview: |
The detailed description below describes each of the shapefiles and associated tables that make up this data set. The definition source contains a link to the metadata for the attribute information for each of the shapefiles and tables. |
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Citation:(1 of 2) |
OFR ME 1995-5 |
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Citation:(2 of 2) |
Standard MRB GIS fields |
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| Detailed Description |
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| Data Layer/Table (1 of 2) |
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Table Name: |
r152nsgr.shp |
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Description: |
ArcView points - gravity stations and bouguer values |
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Metadata Link: |
https://novascotia.ca/natr/meb/download/r154nsgr.asp |
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| Data Layer/Table (2 of 2) |
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Table Name: |
r154nsnl.shp |
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Description: |
ArcView polygon - nealine |
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Metadata Link: |
https://novascotia.ca/natr/meb/download/r154nsnl.asp |
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| Distribution Information |
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Description: |
Downloadable Data |
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Digital Custom Order Process: |
Digital Product Number = DP ME 154 |
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Available: |
since 2006 |
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Liability: |
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.
NR&R 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 NR&R.
The terms and conditions of the license accompany the downloaded digital product.
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Technical Prerequisite: |
In order to view our digital files on your computer, you require mapping software (e.g. ArcGIS(R), ArcInfo(R), ArcView(R), MapInfo(R), AutoCAD(R)). If you do not have this software, ESRI* provides a FREE Map Viewer called ArcExplorer(R) which you can download over the Internet. ArcExplorer(R) works with our "E00", "SHP", "JPG", "SID" and "TIF" files. The "TIF" and "JPG" image file formats can be viewed in a number of graphics and image packages including CorelDraw* and Paint Shop Pro. The MRSID "SID" images can be viewed in an increasing number of image packages as well as with a FREE MRSID viewer supplied by LizardTech*.
In order to use the E00 format data you need to download both ArcExplorer(R) and the ArcExplorer(R) Import Utility (Import71.exe). The import utility is required to convert the ArcInfo "E00" files into ArcInfo coverages, which then can be viewed in ArcExplorer(R).
Problems have been reported trying to import ARC E00 files into ArcView on Windows 95 computers. Related tables do not import into ArcView. It is not a problem on UNIX, Windows 3.1 or Windows NT platforms. If you experience this problem you can use our DXF/DBF product which contains the tables in dBase format. dBase files can be imported into ArcView. |
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Ordering Fee: |
Free |
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Instructions: |
The data set can be downloaded on the Internet |
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Distribution Contact: |
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see contact information |
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| Digital Form: (1 of 3) |
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format name: |
ArcInfo Export (E00) |
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format version: |
8.3 |
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format specification: |
dp154v2e0.exe |
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Transfer Size: |
3.0 MB |
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Dataset Size: |
41.2 MB |
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Information Content: |
Contains data pertaining to d154nsgr, d154nsnl. |
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Decompression Technique: |
self extracting DOS based pkzip archive file |
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Online Transfer: |
https://novascotia.ca/natr/meb/download/dp154.asp |
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| Digital Form: (2 of 3) |
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format name: |
DBF/DXF |
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format specification: |
dp154v2dx.exe |
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Transfer Size: |
3.5 MB |
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Dataset Size: |
62.0 MB |
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Information Content: |
Contains data pertaining to d154nsgr, d154nsnl. |
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Decompression Technique: |
self extracting DOS based pkzip archive file |
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Online Transfer: |
https://novascotia.ca/natr/meb/download/dp154.asp |
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| Digital Form: (3 of 3) |
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format name: |
ArcView Shape Files (SHP) |
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format version: |
3.2a |
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format specification: |
dp154v2sh.exe |
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Transfer Size: |
2.9 MB |
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Dataset Size: |
49.5 MB |
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Information Content: |
Contains data pertaining to d154nsgr, d154nsnl. |
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Decompression Technique: |
self extracting DOS based pkzip archive file |
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Online Transfer: |
https://novascotia.ca/natr/meb/download/dp154.asp |
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| Metadata Reference |
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Creation Date: |
20060801 |
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Metadata Standard: |
FGDC Content Standards for Digital Geospatial Metadata |
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Standard Version: |
FGDC-STD-001-1998 |
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Metadata Language: |
English |
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Time Convention: |
local time |
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Review Date: |
As required |
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Access Constraints: |
none |
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User Constraints: |
none |
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Security Classification System: |
none |
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Security Classification: |
Unclassified |
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Security Handling Description: |
none |
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Metadata Contact: |
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see contact information |
