Ketchikan electromagnetic and magnetic airborne geophysical survey data compilation
type: Dataset
description: The Ketchikan 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 from February to April 1999. A total of 4750.8 line kilometers were collected covering 1648.6 square kilometers. Line spacing was 400 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. In the original 1999 release the Ketchikan survey was merged with data from several adjacent surveys (Kasaan, Hetta, and Dolomi). 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/10.14509/30430.
issued: 2025-09-24T05:53:49.730366
modified: 2025-09-24T05:53:49.730376
spatial: Location
keyword: AmeriGEO
keyword: AmeriGEOSS
keyword: CKAN
keyword: GEO
keyword: GEOSS
keyword: National
keyword: North America
keyword: United States
keyword: aeromagnetic
keyword: aeromagnetic data
keyword: aeromagnetic map
keyword: aeromagnetic survey
keyword: aiken cove
keyword: aiken creek
keyword: aiken lake
keyword: airborne geophysical survey
keyword: alarm mine
keyword: analytic signal
keyword: apparent resistivity data
keyword: apparent resistivity map
keyword: apparent resistivity survey
keyword: babe islands
keyword: barren mountain
keyword: beaver creek
keyword: beaver mountain
keyword: big creek
keyword: black sand cove
keyword: blank inlet
keyword: bostwick creek
keyword: bostwick inlet
keyword: brennan bay
keyword: bucareli bay
keyword: cabin creek
keyword: cannery cove
keyword: cave creek
keyword: chapin peak
keyword: cholmondeley sound
keyword: city of thorne bay
keyword: clam cove
keyword: clare island
keyword: clarence strait
keyword: clarno cove
keyword: clump island
keyword: conductivity survey
keyword: cordova bay
keyword: dall bay
keyword: deichman island
keyword: dog salmon creek
keyword: dolomi bay
keyword: dora bay
keyword: dora lake
keyword: downdraft lake
keyword: electromagnetic data
keyword: electromagnetic survey
keyword: eudora mountain
keyword: exploration
keyword: first vertical derivative
keyword: foot lake
keyword: frequency domain electromagnetic data
keyword: geologic
keyword: geology
keyword: geophysical map
keyword: geophysical survey
keyword: geophysics
keyword: geophysics search tag
keyword: george inlet
keyword: goose bay
keyword: goose creek
keyword: government creek
keyword: grant cove
keyword: green monster mountain
keyword: gridded data
keyword: haida mine
keyword: hassiah inlet
keyword: helen island

Web Resource
type: Distribution
issued: 2023-07-05T20:43:23.548431
modified: 2025-09-24T05:53:49.598474
access URL: http://doi.org/10.14509/27222

https://data.amerigeoss.org/dataset/1dae3110-94e1-41af-b833-a5bfa678fa38/resource/4e5a8cd2-c028-4c7d-845d-bce84d64cec7
type: Distribution
description: CSDGM IMPORT ERROR: No digtinfo/formcont
issued: 2023-07-05T20:43:23.548421
modified: 2025-09-24T05:53:49.595994
title: 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
access URL: http://doi.org/10.14509/30430

Web Resource
type: Distribution
issued: 2023-07-05T20:43:23.548434
modified: 2025-09-24T05:53:49.599712
access URL: http://doi.org/10.14509/29555

Web Resource
type: Distribution
issued: 2023-07-05T20:43:23.548428
modified: 2025-09-24T05:53:49.597242
access URL: http://doi.org/10.14509/30430

US Migrating
type: Agent