The Effect of Attenuation from Fish Shoals on Long-Range, Wide-Area Acoustic Sensing in the Ocean
Remote Sensing, 2019 Acoustics is the primary means of long-range and wide-area sensing in the ocean due to the severe attenuation of electromagnetic waves in seawater.
Daniel Duane +4 more
doaj +1 more source
Performance of a Rotational Sensor to Decipher Volcano Seismic Signals on Etna, Italy
Journal of Geophysical Research: Solid Earth, Volume 127, Issue 6, June 2022., 2022 Abstract Volcano‐seismic signals such as long‐period events and tremor are important indicators for volcanic activity and unrest. However, their wavefield is complex and characterization and location using traditional seismological instrumentation is often difficult.
Eva P. S. Eibl +7 more
wiley +1 more source
Hydroacoustic Travel Time Variations as a Proxy for Passive Deep‐Ocean Thermometry—A Cookbook
Journal of Geophysical Research: Oceans, Volume 127, Issue 5, May 2022., 2022 Abstract We report on the extraction of deep ocean travel time variations from time‐lapse cross‐correlations between a hydrophone station and a three‐component broadband seismometer. The signals we cross‐correlate in this study result from repeated activity by the Monowai seamount, one of the most active submarine volcanoes of the Tonga‐Kermadec ridge.
P. S. M. Smets, C. Weemstra, L. G. Evers
wiley +1 more source
Geophysical Research Letters, Volume 49, Issue 7, 16 April 2022., 2022 Abstract Mount Michael stratovolcano, South Sandwich Islands is extremely remote and challenging to observe, but eruptive activity has been sporadically observed since 1820 and captured by satellite methods since 1989. We identify long‐range infrasound signals recorded by the International Monitoring System attributable to episodes of persistent ...
R. S. De Negri +4 more
wiley +1 more source
Designing ocean acoustic waveguide remote sensing for target detecting and tracking
Journal of Physics: Conference Series, 2018 Acoustic sensor used sound wave to transmit pulses into the underwater in order to gain underwater environment information. We developed Ocean Acoustics Waveguide Remote Sensing (OAWRS) instrument. The acoustic signal acquisition system has been designed which used to record the direct, reflected, scattered or echoed signals originated from transmitter
H M Manik +4 more
openaire +1 more source
High performance architecture design for large scale fibre-optic sensor arrays using distributed EDFAs and hybrid TDM/DWDM [PDF]
, 2013 A distributed amplified dense wavelength division multiplexing (DWDM) array architecture is presented for interferometric fibre optic sensor array systems. This architecture employs a distributed erbium doped fibre amplifier (EDFA) scheme to decrease the
Austin, E.A. +4 more
core +2 more sources
Trans-dimensional inversion of modal dispersion data on the New England Mud Patch [PDF]
, 2019 © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Bonnel, J., Dosso, S. E., Eleftherakis, D., & Chapman, N. R.
Bonnel, Julien +3 more
core +2 more sources
Nonlinear time-warping made simple: a step-by-step tutorial on underwater acoustic modal separation with a single hydrophone [PDF]
, 2020 © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Bonnel, J., Thode, A., Wright, D., & Chapman, R.
Bonnel, Julien +3 more
core +1 more source
Entropy rate defined by internal wave scattering in long-range propagation [PDF]
, 2015 Author Posting. © Acoustical Society of America, 2015. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution.
Colosi, John A., Morozov, Andrey K.
core +2 more sources
Temporal coherence of the acoustic field forward propagated through a continental shelf with random internal waves [PDF]
, 2013 An analytical model derived from normal mode theory for the accumulated effects of range-dependent multiple forward scattering is applied to estimate the temporal coherence of the acoustic field forward propagated through a continental-shelf waveguide ...
Chen, Tianrun +3 more
core +1 more source