Airborne geophysical survey: Oakland HEM data

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Smith, B.D., Cannia, J.C.
Publication_Date: 2008
Title: Airborne geophysical survey: Oakland HEM data
Geospatial_Data_Presentation_Form: vector and raster digital data
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2008-1018
Online_Linkage: http://pubs.usgs.gov/of/2008/1018/
Online_Linkage: https://mrdata.usgs.gov/magnetic/show-survey.php?id=NE_4312
Description:
Abstract:
This report is a digital data release for a helicopter electromagnetic and magnetic survey that was conducted during March 2007 in three 93-square-kilometer (36-square-mile) areas of eastern Nebraska as part of a joint State of Nebraska and U.S. Geological Survey study. The objective of the survey is to improve the understanding of the relationship between surface-water and ground- water systems critical to developing water resource management programs. The electromagnetic equipment consisted of six different coil-pair orientations that measured electrical resistivity at separate frequencies from about 400 hertz to about 115,000 hertz. The electromagnetic data were converted to electrical resistivity geo-referenced grids and maps, each representing different approximate depths of investigation for each area. The range of subsurface investigation is comparable to the depth of shallow aquifers. The three areas selected for the study, Ashland, Firth, and Oakland, have glacial terrains and bedrock that typify different hydrogeologic settings for surface water and ground water in eastern Nebraska. The geophysical and hydrologic information from U.S. Geological Survey studies are being used by resource managers to develop ground-water resource plans for the area.
Purpose:
Improve the understanding of the relationship between surface-water and ground-water systems critical to developing water resource management programs.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2008
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -96.63275
East_Bounding_Coordinate: -96.43825
North_Bounding_Coordinate: 41.90225
South_Bounding_Coordinate: 41.77225
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: environment
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geophysics
Theme_Keyword: geospatial datasets
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Nebraska
Place_Keyword: Oakland
Place:
Place_Keyword_Thesaurus: Common Geographic Areas
Place_Keyword: f31021 = Burt
Place_Keyword: f31039 = Cuming
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bruce D. Smith
Contact_Organization: U.S. Geological Survey
Contact_Position: Geophysicist
Contact_Address:
Address_Type: mailing address
Address: PO Box 25046,MS973
Address: Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 303.236.1399
Contact_Electronic_Mail_Address: bsmith@usgs.gov
Contact_Instructions: Contact via email
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description:
Reduced-size image depicting the data, 748 x 682 pixels, 218,746 bytes
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Arc feature attribute values were inspected and found to be consistently coded as described in the Entity and Attribute section.
Logical_Consistency_Report:
Using ArcGIS tools and routines all arcs were checked for node errors, overshoots, undershoots, dangles, intersections, and duplicate features.
Completeness_Report:
This data set includes only the study area for the HEM investigation conducted near Oakland, Nebraska.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Horizontal accuracy was not assessed.
Lineage:
Process_Step:
Process_Description: Airborne geophysical data processing described in OFR 2008-1018
Process_Date: 20070326
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -99.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1.49693125
Ordinate_Resolution: 1.49693125
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Polyline
Entity_Type_Definition: bounding area of airborne survey maps
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Handle
Attribute_Definition: Unique ID from DXF polyline
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: xxf
Enumerated_Domain_Value_Definition: String of values and text representing the flight path line
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position: Water Webserver Team
Contact_Address:
Address_Type: mailing address
Address: 12201 Sunrise Valley Drive, MS 440
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 1-888-475-8747 (1-888-ASK-USGS)
Contact_Instructions: Contact via email
Resource_Description: Downloadable Data
Distribution_Liability:
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Geosoft database
Format_Version_Number:Format_Information_Content: Flight-line observations
File_Decompression_Technique: unzip
Transfer_Size: 36
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20141205
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 5231 S 19th Street
City: Lincoln
State_or_Province: NE
Postal_Code: 68512
Country: USA
Contact_Voice_Telephone: 402.328.4100
Contact_Electronic_Mail_Address: xxxx@usgs.gov
Contact_Instructions: Contact via email
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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Generated by mp version 2.9.48 on Fri Jul 20 14:36:51 2018