Description
The Dolomi geophysical survey is located in southeast Alaska in the Ketchikan area, about 350 kilometers south of Juneau, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system in March 1991. A total of 415 line kilometers were collected covering 81.2 square kilometers. Line spacing was 200 meters (m). Data were collected approximately 30 m above the ground cover or tree canopy from a helicopter-towed sensor platform ("bird") on a 30-m-long line. The large trees and steep terrain resulted in an average ground clearance of 150 m. The Dolomi survey was flown for the American Copper & Nickel Company, Inc. and provided to DGGS by provided by the Sealaska Corporation. The data were merged and released with the 1999 Ketchikan geophysical survey maps. Map sheets and some of the other files in this data release contain data from adjacent or nearby surveys. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30431.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| DGGS geophysics datasets are typically compilations of multiple digital data file formats. These formats may include: GeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF, ER Mapper ERS, ASCII text files (including CSV), Geosoft ASCII grid (GXF), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), Printer files (HPP, PRN, or other), digital images (multiple formats), digital video (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ | Unknown | CSDGM IMPORT ERROR: No digtinfo/formcont | Open resource |
Tags
- aeromagnetic
- aeromagnetic data
- aeromagnetic map
- aeromagnetic survey
- airborne geophysical survey
- analytic signal
- apparent resistivity data
- apparent resistivity map
- apparent resistivity survey
- cholmondeley sound
- clarence strait
- conductivity survey
- dolomi bay
- dolomi mountain
- electromagnetic data
- electromagnetic survey
- exploration
- first vertical derivative
- frequency domain electromagnetic data
- geologic
- geology
- geophysical map
- geophysical survey
- geophysics
- geophysics search tag
- golden fleece mine
- gridded data
- halibut creek
- james lake
- john creek
- ketchikan mining district
- lake williams
- line data
- magnetic data
- magnetics
- magnetic survey
- paul lake
- port johnson
- remote sensing
- resistivity
- resistivity survey
- southeast alaska