On the Generation and Directional Recording of Waves in the Arctic Ocean.
An experiment to investigate the directional nature and the possible generation mechanisms for waves on the Arctic Ocean, an ocean almost entirely covered with sea ice, is described. The waves under consideration have periods between 10 and 100 seconds and amplitudes between 0.001 and 2.0 centimeter...
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ftdtic:AD0863511 2023-05-15T14:54:42+02:00 On the Generation and Directional Recording of Waves in the Arctic Ocean. Leschack, Leonard A. NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS 1965-09 text/html http://www.dtic.mil/docs/citations/AD0863511 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0863511 en eng http://www.dtic.mil/docs/citations/AD0863511 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN WAVES *ARCTIC OCEAN *STORMS *SEA ICE BAROMETRIC PRESSURE OCEANOGRAPHY OCEAN SURVEILLANCE OCEANOGRAPHIC EQUIPMENT WIND SHOCK WAVES BENDING CORRELATION TECHNIQUES FREQUENCY SIBERIA BAROMETRIC PRESSURE WAVES ENERGY TRANSFER GRAVIMETRY OCEAN WAVE DIRECTION *OCEAN WAVE GENERATION WAVE RECORDERS(WATER WAVES) Text 1965 ftdtic 2016-02-21T16:56:58Z An experiment to investigate the directional nature and the possible generation mechanisms for waves on the Arctic Ocean, an ocean almost entirely covered with sea ice, is described. The waves under consideration have periods between 10 and 100 seconds and amplitudes between 0.001 and 2.0 centimeters. In the present work an array of two continuously recording gravimeters 1,240 meters apart was established at drift station ARLIS II. Observed waves with distinct periods were associated with a storm over Siberia. A continuously recording microbarograph sensitive to atmospheric micropressure oscillations in the 10- to 100-second period range was also installed at ARLIS II. Distinct oscillations were observed in this period range having amplitude of from 20 to 400 dynes/sq cm. Power spectra of micropressure records made before, during, and after a storm show that oscillation amplitude is proportional to the period of the oscillation and speed of local winds. Cross correlation between the micropressure records and wave records taken with a gravimeter at the same location as the microbarograph shows a positive correlation between the micropressure waves and the ocean waves. This correlation appears to vary with the direction of the local surface wind. These micropressure waves contained sufficient force to bend the ice and generate the observed water waves. (Author) Text Arctic Arctic Ocean Ice permafrost Sea ice Siberia Defense Technical Information Center: DTIC Technical Reports database Arctic Arctic Ocean |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN WAVES *ARCTIC OCEAN *STORMS *SEA ICE BAROMETRIC PRESSURE OCEANOGRAPHY OCEAN SURVEILLANCE OCEANOGRAPHIC EQUIPMENT WIND SHOCK WAVES BENDING CORRELATION TECHNIQUES FREQUENCY SIBERIA BAROMETRIC PRESSURE WAVES ENERGY TRANSFER GRAVIMETRY OCEAN WAVE DIRECTION *OCEAN WAVE GENERATION WAVE RECORDERS(WATER WAVES) |
spellingShingle |
Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN WAVES *ARCTIC OCEAN *STORMS *SEA ICE BAROMETRIC PRESSURE OCEANOGRAPHY OCEAN SURVEILLANCE OCEANOGRAPHIC EQUIPMENT WIND SHOCK WAVES BENDING CORRELATION TECHNIQUES FREQUENCY SIBERIA BAROMETRIC PRESSURE WAVES ENERGY TRANSFER GRAVIMETRY OCEAN WAVE DIRECTION *OCEAN WAVE GENERATION WAVE RECORDERS(WATER WAVES) Leschack, Leonard A. On the Generation and Directional Recording of Waves in the Arctic Ocean. |
topic_facet |
Meteorology Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN WAVES *ARCTIC OCEAN *STORMS *SEA ICE BAROMETRIC PRESSURE OCEANOGRAPHY OCEAN SURVEILLANCE OCEANOGRAPHIC EQUIPMENT WIND SHOCK WAVES BENDING CORRELATION TECHNIQUES FREQUENCY SIBERIA BAROMETRIC PRESSURE WAVES ENERGY TRANSFER GRAVIMETRY OCEAN WAVE DIRECTION *OCEAN WAVE GENERATION WAVE RECORDERS(WATER WAVES) |
description |
An experiment to investigate the directional nature and the possible generation mechanisms for waves on the Arctic Ocean, an ocean almost entirely covered with sea ice, is described. The waves under consideration have periods between 10 and 100 seconds and amplitudes between 0.001 and 2.0 centimeters. In the present work an array of two continuously recording gravimeters 1,240 meters apart was established at drift station ARLIS II. Observed waves with distinct periods were associated with a storm over Siberia. A continuously recording microbarograph sensitive to atmospheric micropressure oscillations in the 10- to 100-second period range was also installed at ARLIS II. Distinct oscillations were observed in this period range having amplitude of from 20 to 400 dynes/sq cm. Power spectra of micropressure records made before, during, and after a storm show that oscillation amplitude is proportional to the period of the oscillation and speed of local winds. Cross correlation between the micropressure records and wave records taken with a gravimeter at the same location as the microbarograph shows a positive correlation between the micropressure waves and the ocean waves. This correlation appears to vary with the direction of the local surface wind. These micropressure waves contained sufficient force to bend the ice and generate the observed water waves. (Author) |
author2 |
NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS |
format |
Text |
author |
Leschack, Leonard A. |
author_facet |
Leschack, Leonard A. |
author_sort |
Leschack, Leonard A. |
title |
On the Generation and Directional Recording of Waves in the Arctic Ocean. |
title_short |
On the Generation and Directional Recording of Waves in the Arctic Ocean. |
title_full |
On the Generation and Directional Recording of Waves in the Arctic Ocean. |
title_fullStr |
On the Generation and Directional Recording of Waves in the Arctic Ocean. |
title_full_unstemmed |
On the Generation and Directional Recording of Waves in the Arctic Ocean. |
title_sort |
on the generation and directional recording of waves in the arctic ocean. |
publishDate |
1965 |
url |
http://www.dtic.mil/docs/citations/AD0863511 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0863511 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Ice permafrost Sea ice Siberia |
genre_facet |
Arctic Arctic Ocean Ice permafrost Sea ice Siberia |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0863511 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766326469694324736 |