Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy
In July 2002, a helicopter geophysical survey was carried out over Ringvassøy, Troms county. The purpose of the surveys was to provide geophysical information for mineral exploration. The data were collected and processed by Geological Survey of Norway (NGU). A total of about 1589 line-km of electro...
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ftnorgesgu:oai:openarchive.ngu.no:11250/2665188 2023-05-15T16:32:52+02:00 Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy Mogaard, John Olav Mauring, Eirik 15353 Rebbenesøy 15352 Helgøy 15344 Ringvassøy 15341 Reinøy 2002 application/pdf https://hdl.handle.net/11250/2665188 eng eng NGU-Rapport (2002.099) urn:issn:0800-3416 https://hdl.handle.net/11250/2665188 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 9 DATABEHANDLING ELEKTROMAGNETISK MÅLING MAGNETOMETRI RADIOMETRI Report 2002 ftnorgesgu 2022-07-03T15:27:15Z In July 2002, a helicopter geophysical survey was carried out over Ringvassøy, Troms county. The purpose of the surveys was to provide geophysical information for mineral exploration. The data were collected and processed by Geological Survey of Norway (NGU). A total of about 1589 line-km of electromagnetic (EM), very low frequency EM (VLF), radiometric, and magnetic data were acquired using a nominal 200-m line spacing. The nominal flying height was 60 m above ground level (AGL), and lines were flown in alternating directions at headings of South and North. Noise levels were within survey specifications.\rAll initial processing was carried out on a flight-by-flight basis. Magnetic data, consisting of total field measurements collected by a cesium vapor magnetometer, were corrected by removing diurnal variations as recorded at a magnetic base station at Hansnes, Ringvassøy. Radiometric data were reduced using three-channel processing according to procedures recommended by the International Atomic Agency Association. VLF data were reduced by removing a first-order trend along each line. EM data were leveled using data from frequent high altitude excursions above 300-m AGL. All final processed data were gridded using 50-m square cells. Geophysical maps were produced at a scale of 1:50 000 and are considered as standalone products.\rThis report covers aspects of data acquistion and processing. 50260 Report Hansnes Troms NGU Open Archive (Geological Survey of Norway) Hansnes ENVELOPE(20.221,20.221,69.527,69.527) Helgøy ENVELOPE(19.360,19.360,70.113,70.113) Norway |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
English |
topic |
DATABEHANDLING ELEKTROMAGNETISK MÅLING MAGNETOMETRI RADIOMETRI |
spellingShingle |
DATABEHANDLING ELEKTROMAGNETISK MÅLING MAGNETOMETRI RADIOMETRI Mogaard, John Olav Mauring, Eirik Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy |
topic_facet |
DATABEHANDLING ELEKTROMAGNETISK MÅLING MAGNETOMETRI RADIOMETRI |
description |
In July 2002, a helicopter geophysical survey was carried out over Ringvassøy, Troms county. The purpose of the surveys was to provide geophysical information for mineral exploration. The data were collected and processed by Geological Survey of Norway (NGU). A total of about 1589 line-km of electromagnetic (EM), very low frequency EM (VLF), radiometric, and magnetic data were acquired using a nominal 200-m line spacing. The nominal flying height was 60 m above ground level (AGL), and lines were flown in alternating directions at headings of South and North. Noise levels were within survey specifications.\rAll initial processing was carried out on a flight-by-flight basis. Magnetic data, consisting of total field measurements collected by a cesium vapor magnetometer, were corrected by removing diurnal variations as recorded at a magnetic base station at Hansnes, Ringvassøy. Radiometric data were reduced using three-channel processing according to procedures recommended by the International Atomic Agency Association. VLF data were reduced by removing a first-order trend along each line. EM data were leveled using data from frequent high altitude excursions above 300-m AGL. All final processed data were gridded using 50-m square cells. Geophysical maps were produced at a scale of 1:50 000 and are considered as standalone products.\rThis report covers aspects of data acquistion and processing. 50260 |
format |
Report |
author |
Mogaard, John Olav Mauring, Eirik |
author_facet |
Mogaard, John Olav Mauring, Eirik |
author_sort |
Mogaard, John Olav |
title |
Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy |
title_short |
Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy |
title_full |
Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy |
title_fullStr |
Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy |
title_full_unstemmed |
Data Acquisition and Processing - Helicopter Geophysical Survey, Ringvassøy |
title_sort |
data acquisition and processing - helicopter geophysical survey, ringvassøy |
publishDate |
2002 |
url |
https://hdl.handle.net/11250/2665188 |
op_coverage |
15353 Rebbenesøy 15352 Helgøy 15344 Ringvassøy 15341 Reinøy |
long_lat |
ENVELOPE(20.221,20.221,69.527,69.527) ENVELOPE(19.360,19.360,70.113,70.113) |
geographic |
Hansnes Helgøy Norway |
geographic_facet |
Hansnes Helgøy Norway |
genre |
Hansnes Troms |
genre_facet |
Hansnes Troms |
op_source |
9 |
op_relation |
NGU-Rapport (2002.099) urn:issn:0800-3416 https://hdl.handle.net/11250/2665188 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1766022619524497408 |