Airborne geophysical survey: Massachusetts Coop '65 (Includes parts of Rowe ARMS '59 and Brookhaven ARMS '60)


Identification Information:
Citation:
Citation Information:
Originator: U.S. Geological Survey and the Department of Interior
Publication Date: 2012
Title: Airborne geophysical survey: Massachusetts Coop '65 (Includes parts of Rowe ARMS '59 and Brookhaven ARMS '60)
Geospatial Data Presentation Form: analog contour map
Online Linkage: https://mrdata.usgs.gov/magnetic/show-survey.php?id=MA0543_pg.shp
Description:
Abstract: Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. In the earlier days of surveying, the only way to represent this data was to generate an analog map with contour lines. This dataset is a representation of the digitized contour lines either by following the lines or by choosing the intersection of the contour and flight-line to create a value of the magnetic field. The values presented are latitude, longitude, and map magnetic-field values.
Purpose: Aeromagnetic surveys are used for geophysical prospecting. Some variations in magnetic measurements are caused by rocks that contain significant amounts of magnetic minerals (magnetite being the most common). These anomalies reflect variations in the amount and type of magnetic material and the shape and depth of the body of rock. The features and patterns of aeromagnetic anomalies can also be used to delineate details of subsurface geology including the locations of buried faults and the thickness of surficial sedimentary rocks.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 195909 and 19650429
Ending Date: 195911 and 19650503
Currentness Reference: ground condition
Status:
Progress: complete
Maintenance and Update Frequency: none planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -72.75
East Bounding Coordinate: -71.62
North Bounding Coordinate: 42.25
South Bounding Coordinate: 42.00
Data Set G-Polygon:
Data Set G-Polygon Outer G-Ring:
G-Ring: -72.75 42.25, -71.62 42.25, -71.62 42.00, -72.75 42.00, -72.75 42.25
Keywords:
Theme:
Theme Keyword Thesaurus: none
Theme Keyword: geophysical surveys
Theme Keyword: aeromagnetic data
Theme Keyword: airborne surveys
Theme Keyword: magnetic surveys
Theme Keyword: residual magnetic field
Theme Keyword: total field
Theme Keyword: magnetic
Theme:
Theme Keyword Thesaurus: USGS Thesaurus
Theme Keyword: geophysics
Theme Keyword: geospatial datasets
Theme Keyword: magnetic field (earth)
Theme Keyword: aeromagnetic surveying
Theme Keyword: field monitoring stations
Place:
Place Keyword Thesaurus: none
Place Keyword: United States
Place Keyword: Massachusetts
Place Keyword: Connecticut
Place Keyword: Rhode Island
Place Keyword: MA
Place Keyword: CT
Place Keyword: RI
Place:
Place Keyword Thesaurus: Common Geographic Areas
Place Keyword: f09003 = Hartford
Place Keyword: f09013 = Tolland
Place Keyword: f09015 = Windham
Place Keyword: f25013 = Hampden
Place Keyword: f25015 = Hampshire
Place Keyword: f25027 = Worcester
Place Keyword: f44007 = Providence
Access Constraints: none
Use Constraints: none. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data.
Browse Graphic:
Browse Graphic File Name: http://mrdata.usgs.gov/geophysics/surveys/geophysics3/MA-CT-RI/ma-ct-ri0543.jpg
Browse Graphic File Description: Reduced-size image depicting the data, 1118 x 608 pixels, 162,317 bytes
Browse Graphic File Type: JPEG
Data Set Credit: These USGS employees contributed to reformatting and archiving these data: Viki Bankey, Pat Hill, Holly Hindle, Bob Kucks, Sarah Shearer, Esther Castellanous
Cross Reference:
Citation Information:
Originator: U.S. Geological Survey
Publication Date: 1972
Title: Northeastern United States regional aeromagnetic maps
Geospatial Data Presentation Form: map
Series Information:
Series Name: U.S. Geological Survey Open-file Report
Issue Identification: OF 72-459
Publication Information:
Publication Place: Denver, CO
Publisher: U.S. Geological Survey
Other Citation Details: by I. Zietz, F. Gilbert, and J.R. Kirby 13 sheets map scale 1:250,000 Note: GP maps were published for this project. They are too numerous to list here.
Data Quality Information:
Attribute Value Accuracy Information:
Attribute Accuracy Report: The data shown on the original map have been processed using various formulas and methods that are not usually documented but that represent industry standard practices for airborne data reduction. For example, position is listed as latitude and longitude, but these values were derived from the raw navigation data depending on the system used. (see notes under horizontal accuracy). Line numbers were added to records, and unusable data at flight-line ends were discarded (as aircraft slowed and turned around). Separate recordings were correlated by time and assigned to the correct location. The exact accuracies of these processing steps may not be known. They are discussed in the sections on attribute or positional accuracies.
Logical Consistency Report: The data on the original map were collected by a single contractor or group who were responsible for collecting and processing the data. The data from this survey were collected using the same instruments (magnetometers, altimeters, navigational systems) throughout the survey and were collected in a normal length of time with no long delays between survey beginning and end. Survey layout specified the conditions and specifications under which these data were collected. Standard industry practices of the time were followed in data collection and processing. The flight lines for this survey were flown in-between the lines of another survey. Both surveys were combined and adjusted manually to fit together. This resulted in an effective line spacing of 0.5 mile for this area. The combined surveys were published as a series of maps covering the area for this survey.
Completeness Report: Data is complete as reasonably digitized from the original map
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: Flight Path Recovery Horizontal position of the survey aircraft used to collect data were determined by reconciling down-looking photographs (recorded on continuous-strip film) with topographic maps and orthophotoquadrangle maps. Fiducial numbers and marks, impressed on any paper strips that were recording data or added to magnetic tape records, were included as a function of time to further reconcile location with instrumentation.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: The aircraft vertical position was determined using the navigational positioning equipment on the aircraft, which were radar altimeter and barometric altimeter.
Lineage:
Process Step:
Process Description: Conversion of measured values to geographic position and magnetic values was performed by the processors using industry standard practices. Details are found under Horizontal_Position_Accuracy_Report, and Vertical_Position_Accuracy_Report Unless noted, conversion processes were not documented. Products may include some written documentation.
Process Date: 1965
Process Step:
Process Description: USGS digitized original map to ASCII format. USGS personnel used the software package Oasis Montaj by Geosoft, Inc., to read in the ASCII digitized data and create raster JPEG images.
Process Date: 2008
Spatial Data Organization Information:
Direct Spatial Reference Method: point
Spatial Reference Information:
Horizontal Coordinate System Definition:
Geographic:
Latitude Resolution: 0.0001
Longitude Resolution: 0.0001
Geographic Coordinate Units: decimal degrees
Geodetic Model:
Horizontal Datum Name: North American Datum of 1927
Ellipsoid Name: Clarke 1866
Semi-major Axis: 6,378,206.4
Denominator of Flattening Ratio: 294.98
Entity and Attribute Information:
Overview Description:
Entity and Attribute Overview: Airborne survey specifications These items are constant for the entire survey Project number: 0543 (includes parts of projects 0344 and 413) Project name: Massachusetts Coop '65 Survey flown by: U.S. Geological Survey Survey flown for: U.S. Geological Survey Approx. no. of line miles: 2250 Survey height: 500 ft Altitude method: Above Ground Flight-line spacing: 0.5 mi Flight-line direction: E-W Aircraft used: Douglas DC-3, C-47 and Convair Airport - arrival: Albany, NY & Westfield, MA Airport - departure: Albany, NY & Westfield, MA Sensor tow distance: unknown Magnetometer used: fluxgate Data recording interval: unknown Regional field removed: none
Entity and Attribute Detail Citation: Nettleton, L.L., 1971, Elementary Gravity and Magnetics for Geologists and Seismologists: Society of Exploration Geophysicists Monograph Series No. 1. Dobrin, M.B., 1976, Introduction to Geophysical Prospecting: New York, McGraw-Hill Book Company, Sheriff, R.E., 1984, Encyclopedic dictionary of exploration geophysics: Tulsa, OK, Society of Exploration Geophysicists.
Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: Web site administration: U.S Geological Survey Central Publications Group
Contact Address:
Address Type: mailing address
Address: Central Publications Group USGS MS 902, Box 25046 DFC
City: Denver
State or Province: CO
Postal Code: 80225-0046
Contact Voice Telephone: 303-236-5486
Distribution Liability: Although all data published on this website have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ASCII
Format Specification: Each line contains data in the following format, beginning with line 1 (no header included): longitude F12.4 Longitude in decimal degrees latitude F12.4 Latitude in decimal degrees mag F8.1 Magnetic value represented on map. This is the total field value with an arbitrary datum removed
Format Version Date: 1998
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: http://crustal.usgs.gov/geophysics/index.html for link to report
Fees: none
Distribution Information:
Distributor:
Contact Information:
Contact Person Primary:
Contact Person: Peter N Schweitzer
Contact Organization: USGS Eastern Mineral and Environmental Resources Science Center
Contact Position: Geologist
Contact Address:
Address Type: mailing address
Address: 12201 Sunrise Valley Drive
City: Reston
State or Province: VA
Postal Code: 20192-0002
Country: USA
Contact Voice Telephone: 703-648-6533
Contact Facsimile Telephone: 703-648-6252
Contact Electronic Mail Address: pschweitzer@usgs.gov
Resource Description: ma-ct-ri0543_meta.txt
Distribution Liability: This dataset was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: CSV
Format Information Content: Flight-line airborne magnetic anomaly measurements
File Decompression Technique: none
Transfer Size: 0.85180282592773
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: http://mrdata.usgs.gov/geophysics/surveys/geophysics3/MA-CT-RI/ma-ct-ri0543.txt
Fees: none
Metadata Reference Information:
Metadata Date: 20141205
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: USGS Crustal Geophysics and Geochemistry Science Center
Contact Address:
Address Type: mailing address
Address: Magnetic and Gravity Information U.S. Geological Survey Box 25046 Mail Stop 964 Denver Federal Center
City: Denver
State or Province: CO
Postal Code: 80225-0046
Contact Voice Telephone: 303-236-5652
Metadata Standard Name: Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998