Results 1 to 10 of about 722,173 (60)

Observations of Ocean Surface Wave Attenuation in Sea Ice Using Seafloor Cables

Geophysical Research Letters, Volume 50, Issue 20, 28 October 2023., 2023
Abstract The attenuation of ocean surface waves during seasonal ice cover is an important control on the evolution of Arctic coastlines. The spatial and temporal variations in this process have been challenging to resolve with conventional sampling using sparse arrays of moorings or buoys.
Madison M. Smith, Jim Thomson, Michael G. Baker, Robert E. Abbott, Jake Davis   +4 more
wiley   +1 more source

Surface deployment of DAS systems: Coupling strategies and comparisons to geophone data

Near Surface Geophysics, Volume 20, Issue 5, Page 465-477, October 2022., 2022
Abstract Distributed acoustic sensing (DAS) systems are a recent technological development for seismic observations over a broad range of frequencies with a wide variety of applications. Typically, fibre‐optic cables are buried underground or cemented into well casings where the cables are well‐coupled to the ground.
Nicholas Harmon, Catherine A. Rychert, John Davis, Gilberto Brambilla, William Buffet, Ben Chichester, Yuhang Dai, Petros Bogiatzis, James Snook, Lieke van Putten, Ali Masoudi   +10 more
wiley   +1 more source

Subsurface Imaging With Ocean‐Bottom Distributed Acoustic Sensing and Water Phases Reverberations

Geophysical Research Letters, Volume 49, Issue 2, 28 January 2022., 2022
Abstract Seismic waves from earthquakes recorded on the seafloor are composed of complex multiple arrivals. Here, distributed acoustic sensing (DAS) observations along a cable located offshore the Sanriku Coast, Japan, show that the local earthquake wavefield is particularly rich in Scholte waves.
Zack J. Spica, Jorge C. Castellanos, Loïc Viens, Kiwamu Nishida, Takeshi Akuhara, Masanao Shinohara, Tomoaki Yamada   +6 more
wiley   +1 more source

Introducing a data availability policy for journals at IOP Publishing: Measuring the impact on authors and editorial teams

Learned Publishing, Volume 34, Issue 4, Page 478-486, October 2021., 2021
Abstract As the open research movement continues to gather pace, a number of publishers, funders, and institutions are mandating the sharing of underlying research data. At the same time, concerns about introducing extra quality control steps around data availability statements (DAS) are driving a discussion about the best way to make data more open ...
Jade Holt, Andrew Walker, Phill Jones
wiley   +1 more source

Aquifer Monitoring Using Ambient Seismic Noise Recorded With Distributed Acoustic Sensing (DAS) Deployed on Dark Fiber

Journal of Geophysical Research: Solid Earth, Volume 126, Issue 4, April 2021., 2021
Abstract Groundwater is a critical resource for human activities worldwide, and a vital component of many natural ecosystems. However, the state and dynamics of water‐bearing aquifers remain uncertain, mostly due to the paucity of subsurface data at high spatial and temporal resolution.
Verónica Rodríguez Tribaldos, Jonathan B. Ajo‐Franklin   +1 more
wiley   +1 more source

Risk to human and animal health related to the presence of 4,15‐diacetoxyscirpenol in food and feed

EFSA Journal, Volume 16, Issue 8, August 2018., 2018
Abstract 4,15‐Diacetoxyscirpenol (DAS) is a mycotoxin primarily produced by Fusarium fungi and occurring predominantly in cereal grains. As requested by the European Commission, the EFSA Panel on Contaminants in the Food Chain (CONTAM) assessed the risk of DAS to human and animal health related to its presence in food and feed. Very limited information
EFSA Panel on Contaminants in the Food Chain (CONTAM), Helle Katrine Knutsen, Jan Alexander, Lars Barregård, Margherita Bignami, Beat Brüschweiler, Sandra Ceccatelli, Bruce Cottrill, Michael Dinovi, Bettina Grasl‐Kraupp, Christer Hogstrand, Laurentius (Ron) Hoogenboom, Carlo Stefano Nebbia, Isabelle P Oswald, Annette Petersen, Martin Rose, Alain‐Claude Roudot, Tanja Schwerdtle, Christiane Vleminckx, Günter Vollmer, Heather Wallace, Sarah De Saeger, Gunnar Sundstøl Eriksen, Peter Farmer, Jean‐Marc Fremy, Yun Yun Gong, Karsten Meyer, Dominique Parent‐Massin, Hans van Egmond, Andrea Altieri, Paolo Colombo, Zsuzsanna Horváth, Sara Levorato, Lutz Edler   +33 more
wiley   +1 more source

High‐Frequency Tsunamis Excited Near Torishima Island, Japan, Observed by Distributed Acoustic Sensing

Geophysical Research Letters, Volume 51, Issue 11, 16 June 2024.
Abstract Recent distributed acoustic sensing (DAS) experiments in ocean areas throughout the world have accumulated records for various wavefields. However, there are few tsunami records because tsunami observation depends on the DAS experimental period and its location.
T. Tonegawa, E. Araki
wiley   +1 more source

Stacking of Distributed Dynamic Strain Reveals Link Between Seismic Velocity Changes and the 2020 Unrest in Reykjanes

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 6, June 2024.
Abstract In this study, we measure seismic velocity variations during two cycles of crustal inflation and deflation in 2020 on the Reykjanes peninsula (SW Iceland) by applying coda wave interferometry to ambient noise recorded by distributed dynamic strain sensing (also called DAS).
Regina Maass, Sven Schippkus, Céline Hadziioannou, Benjamin Schwarz, Philippe Jousset, Charlotte Krawczyk   +5 more
wiley   +1 more source

Signal propagation from portable active seismic source (PASS) to km‐scale borehole DAS for continuous monitoring of CO2 storage site

Greenhouse Gases: Science and Technology, Volume 14, Issue 1, Page 4-10, February 2024.
Abstract We have developed a portable active seismic source (PASS) to monitor CO2 storage reservoirs at a depth of approximately 1 km. Despite its small size, stacking the signals generated by the PASS improves the signal‐to‐noise ratio of the seismometer data far from the source.
Takeshi Tsuji, Eiichi Arakawa, Hitoshi Tsukahara, Fumitoshi Murakami, Naoshi Aoki, Susumu Abe, Takuya Miura   +6 more
wiley   +1 more source

Sensing Optical Fibers for Earthquake Source Characterization Using Raw DAS Records

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 1, January 2024.
Abstract Distributed Acoustic Sensing (DAS) is becoming a powerful tool for earthquake monitoring, providing continuous strain‐rate records of seismic events along fiber optic cables. However, the use of standard seismological techniques for earthquake source characterization requires the conversion of data in ground motion quantities. In this study we
Claudio Strumia, Alister Trabattoni, Mariano Supino, Marie Baillet, Diane Rivet, Gaetano Festa   +5 more
wiley   +1 more source