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Observing Internal Solitary Waves in the Lombok Strait by Coastal Acoustic Tomography
Author(s) -
Syamsudin Fadli,
Taniguchi Naokazu,
Zhang Chuanzheng,
Hanifa Aruni Dinan,
Li Guangming,
Chen Minmo,
Mutsuda Hidemi,
Zhu ZeNan,
Zhu XiaoHua,
Nagai Taira,
Kaneko Arata
Publication year - 2019
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2019gl084595
Subject(s) - internal wave , geology , inversion (geology) , tomography , seismology , underdetermined system , travel time , acoustic wave , internal tide , oceanography , geodesy , optics , physics , geometry , tectonics , mathematics , engineering , transport engineering
The subsurface structures of internal solitary waves were observed over two days from 27 to 29 February 2019, by two bottom‐moored coastal acoustic tomography systems over a path length of 18.286 km in the Lombok Strait, Indonesia. One‐way travel times along the transmission path between the acoustic stations were determined for the first three arrival peaks. The resulting three travel times were used to execute a four‐layer (0–50, 150–300, 300–450, and 400–603 m) temperature inversion, constructing an underdetermined problem. The inverted four‐layer temperatures show three positive peaks and two negative peaks during the observation period, implying the sequential passage of internal solitary waves with depressed and elevated interfaces. The generation of these temperature peaks is synchronized with the diurnal tides, and the peak heights decrease with depth. The inverted four‐layer temperatures are in excellent agreement with conductivity‐temperature‐depth data obtained near the acoustic stations.