Correlation of high-frequency acoustic backscattering with temperature of Arctic Sea bottom sediment

V. I. Yusupov, A. S. Salomatin, I. P. Semiletov

Research output: Contribution to journalArticle

Abstract

Investigation of acoustic backscattering at 50 and 200 kHz and of temperature in the upper layer of bottom sediment in the Arctic shelf is reported. Abnormally deep (>10 ms from bottom surface for 50 kHz and >5 ms for 200 kHz) backscattering was registered on shelf regions with negative bottom sediment temperature; the phenomenon is attributed to permafrost. It is demonstrated that high-frequency acoustic backscattering method allows remote detection of the regions with negative and positive bottom temperature that is useful for permafrost dynamics investigation in the Arctic shelf and for studying gas-hydrate stability zone.

Original languageEnglish
Pages (from-to)686-688
Number of pages3
JournalDoklady Akademii Nauk
Volume402
Issue number5
Publication statusPublished - 2005

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ASJC Scopus subject areas

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