BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN
Bottom reverberation was measured at five locations in the North Atlantic using a hydrophone and explosive charges suspended near the ocean floor. Measured backscattering strengths in the frequency range from 800 Hz to 12.8 kHz show a tendency to rise moderately with frequency. The dependence on gra...
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ftdtic:AD0686834 2023-05-15T17:28:49+02:00 BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN Merklinger,H. M. DEFENCE RESEARCH ESTABLISHMENT ATLANTIC DARTMOUTH (NOVA SCOTIA) 1968 text/html http://www.dtic.mil/docs/citations/AD0686834 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0686834 en eng http://www.dtic.mil/docs/citations/AD0686834 Availability: Pub. in Jnl. of Acoustical Society of America, v44 n2 p508-513 Aug 68. No copies furnished. DTIC AND NTIS Physical and Dynamic Oceanography Acoustics (*UNDERWATER SOUND REVERBERATION) UNDERWATER EXPLOSIONS OCEAN BOTTOM ATLANTIC OCEAN BACKSCATTERING CANADA NORTH ATLANTIC OCEAN Text 1968 ftdtic 2016-02-18T21:59:27Z Bottom reverberation was measured at five locations in the North Atlantic using a hydrophone and explosive charges suspended near the ocean floor. Measured backscattering strengths in the frequency range from 800 Hz to 12.8 kHz show a tendency to rise moderately with frequency. The dependence on grazing angle was found to vary between a sine to the one-half and a sine-squared relation. Measurements made at several depths indicate that a portion of the reverberation originates in the subbottom layer structure directly beneath the point of measurement. At frequencies above 400 Hz, this reverberation from the subbottom appears to contribute significantly only at the steeper grazing angles. (Author) Text North Atlantic Defense Technical Information Center: DTIC Technical Reports database Canada |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography Acoustics (*UNDERWATER SOUND REVERBERATION) UNDERWATER EXPLOSIONS OCEAN BOTTOM ATLANTIC OCEAN BACKSCATTERING CANADA NORTH ATLANTIC OCEAN |
spellingShingle |
Physical and Dynamic Oceanography Acoustics (*UNDERWATER SOUND REVERBERATION) UNDERWATER EXPLOSIONS OCEAN BOTTOM ATLANTIC OCEAN BACKSCATTERING CANADA NORTH ATLANTIC OCEAN Merklinger,H. M. BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN |
topic_facet |
Physical and Dynamic Oceanography Acoustics (*UNDERWATER SOUND REVERBERATION) UNDERWATER EXPLOSIONS OCEAN BOTTOM ATLANTIC OCEAN BACKSCATTERING CANADA NORTH ATLANTIC OCEAN |
description |
Bottom reverberation was measured at five locations in the North Atlantic using a hydrophone and explosive charges suspended near the ocean floor. Measured backscattering strengths in the frequency range from 800 Hz to 12.8 kHz show a tendency to rise moderately with frequency. The dependence on grazing angle was found to vary between a sine to the one-half and a sine-squared relation. Measurements made at several depths indicate that a portion of the reverberation originates in the subbottom layer structure directly beneath the point of measurement. At frequencies above 400 Hz, this reverberation from the subbottom appears to contribute significantly only at the steeper grazing angles. (Author) |
author2 |
DEFENCE RESEARCH ESTABLISHMENT ATLANTIC DARTMOUTH (NOVA SCOTIA) |
format |
Text |
author |
Merklinger,H. M. |
author_facet |
Merklinger,H. M. |
author_sort |
Merklinger,H. M. |
title |
BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN |
title_short |
BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN |
title_full |
BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN |
title_fullStr |
BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN |
title_full_unstemmed |
BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN |
title_sort |
bottom reverberation measured with explosive charges fired deep in the ocean |
publishDate |
1968 |
url |
http://www.dtic.mil/docs/citations/AD0686834 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0686834 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0686834 |
op_rights |
Availability: Pub. in Jnl. of Acoustical Society of America, v44 n2 p508-513 Aug 68. No copies furnished. |
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1766121910915039232 |