Dataset Name

Iron Creek geophysics compilation

Bibliographic Reference

Burns, L.E., Geoterrex-Dighem, WGM, Inc., Emond, A.M., and Graham, G.R.C., 2014, Iron Creek airborne electromagnetic and magnetic geophysical survey data compilation: Alaska Division of Geological & Geophysical Surveys Geophysical Report 2014-6. http://doi.org/10.14509/27360

Table of Contents

Layer Name: metadata
Layer Description: metadata files, read me files and reports
/metadata/GPR2014-6.faq.html
/metadata/GPR2014-6.txt
/metadata/GPR2014-6.xml

Layer Name: vector_data
Layer Description: line path in ESRI Arc Shapefile format; line path, data contours, EM anomalies, and townships in DXF and PLT format
/vector_data/ironcreek_emanomalies.dxf
/vector_data/ironcreek_emanomalies.plt
/vector_data/ironcreek_flightpath.plt
/vector_data/ironcreek_linepath_ln.cpg
/vector_data/ironcreek_linepath_ln.dbf
/vector_data/ironcreek_linepath_ln.prj
/vector_data/ironcreek_linepath_ln.sbn
/vector_data/ironcreek_linepath_ln.sbx
/vector_data/ironcreek_linepath_ln.shp
/vector_data/ironcreek_linepath_ln.shx
/vector_data/ironcreek_mag_contours.dxf
/vector_data/ironcreek_mag_contours.plt
/vector_data/ironcreek_res56khz_contours.dxf
/vector_data/ironcreek_res56khz_contours.plt
/vector_data/ironcreek_res7200hz_contours.dxf
/vector_data/ironcreek_res7200hz_contours.plt
/vector_data/ironcreek_res900hz_contours.dxf
/vector_data/ironcreek_res900hz_contours.plt
/vector_data/ironcreek_survey_boundary.cpg
/vector_data/ironcreek_survey_boundary.dbf
/vector_data/ironcreek_survey_boundary.ply
/vector_data/ironcreek_survey_boundary.prj
/vector_data/ironcreek_survey_boundary.shp
/vector_data/ironcreek_survey_boundary.shx
/vector_data/ironcreek_townships.dxf
/vector_data/ironcreek_townships.plt
/vector_data/readme_ironcreek_vector_data.txt

Supplemental Information


 >Project specifications:
 > line km: 5042
 > data points: 834052
 > start date: 1997-08-06
 > end date: 1997-08-24
 > Specified Helicopter Terrain Clearance: 60 meters
 > Specified Sensor Terrain Clearance: 30 meters
 > Production Line Spacing: 400 meters
 > Tie Line Spacing: 4800 meters
 > Line direction: N 45 W
 > Coil orientations/frequencies/Tx-Rx separation:
 > coaxial 900 Hz 8.0 meters
 > coplanar 900 Hz 8.0 meters
 > coaxial 5500 Hz 8.0 meters
 > coplanar 7200 Hz 8.0 meters
 > coplanar 56,000 Hz 6.4 meters
 > Actual Frequencies (Hz):
 > August 6, 1997
 > Flight 1
 > coaxial 1070 Hz
 > coplanar 864 Hz
 > coaxial 6368 Hz
 > coplanar 7294 Hz
 > coplanar 55,951 Hz
 > August 6, 1997 - August 8, 1997
 > Flights 2-8
 > coaxial 1070 Hz
 > coplanar 888 Hz
 > coaxial 6368 Hz
 > coplanar 7294 Hz
 > coplanar 55,951 Hz
 > August 9, 1997 - August 24, 1997
 > Flights 9-48
 > coaxial 1070 Hz
 > coplanar 911 Hz
 > coaxial 6368 Hz
 > coplanar 7294 Hz
 > coplanar 55,951 Hz
 > Channels recorded:
 > 5 inphase channels
 > 5 quadrature channels
 > 2 monitor channels

Metadata

Metadata is the data about the data and answers "Who, what, when, where, how and why?" about the dataset. Please see the DGGS Metadata README page for information about our metadata.

Use Constraints

Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

Distribution Contact Information

Metadata Manager
Alaska Division of Geological & Geophysical Surveys
3354 College Road
Fairbanks, AK 99709-3707
Phone Number: (907)451-5020
Fax Number: (907)451-5050
E-mail: dggspubs@alaska.gov