Description
The Hetta 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 May 1992. A total of 1,707 line kilometers were collected covering 323.3 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 Hetta survey was flown for the American Copper & Nickel Company, Inc. and provided to DGGS 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/10.14509/30433.
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
- beaver creek
- billie mountain
- bully boy creek
- cholmondeley sound
- clarence strait
- conductivity survey
- copper harbor
- copper mountain
- corbin mine
- cordova bay
- deer bay
- dell island
- dolomi bay
- dolomi mountain
- eek lake
- 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
- gould island
- gould passage
- gridded data
- halibut creek
- hetta creek
- hetta inlet
- hetta lake
- hetta mountain
- hydaburg river
- james lake
- john creek
- jumbo creek
- jumbo island
- ketchikan mining district
- lake josephine
- lake marge
- lake mellen
- lake williams
- line data
- magnetic data
- magnetics
- magnetic survey
- mount jumbo
- mud bay
- natzuhini bay
- nutkwa falls
- paul lake
- perry creek
- portage bay
- port johnson
- remote sensing
- resistivity
- resistivity survey
- reynolds creek
- southeast alaska
- sulzer passage
- summit lake
- wright creek