Results 11 to 20 of about 8,879,776 (186)

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

Evaluasi Kinerja Sub Das Krueng Jreu Kabupaten Aceh Besar

Rona Teknik Pertanian, 2022
Abstrak. Dampak perubahan alih fungsi lahan merupakan kejadian di alam yang perlu dipahami untuk menentukan tindakan yang perlu dilakukan di waktu yang akan datang.
Khairun Purgawa, Hairul Basri, Syahrul Syahrul   +2 more
doaj   +1 more source

DAS POTÊNCIAS DA MEMÓRIA. A afirmação da transitoriedade histórica e da eternidade das ideias [PDF]

Kriterion: Revista de Filosofia, 2020
RESUMO A partir do exame da tradição heraclitiana e platônica sobre a transitoriedade e a imortalidade - conceitos compreendidos como universais - este artigo defende a seguinte antinomia como tese: para haver temporalidade é preciso haver eternidade. Essa tese é demonstrada por meio do estudo e atualização das noções de alma, espírito, ideia e memória,
openaire   +4 more sources

Comparison of Anxiety and Perception Levels of Patients Undergoing Initial Periodontal Treatment Using Different Instruments

Cumhuriyet Dental Journal, 2018
Objectives The aim of this study is to compare perception and anxiety levels of patients who are received different anesthesia and instruments prior to periodontal treatment.Material and MethodsThe study performed in the Periodontology Department of ...
Aysan Lektemür Alpan
doaj   +1 more source

Da cultura da subtileza [PDF]

Disputatio, 2009
Um facto crucial no desenvolvimento da filosofia do seculo que agora termina foi a fragmentacao da cultura filosofica europeia no que na verdade se pode considerar duas culturas filosoficas separadas, como se reflecte imediatamente na analise da literatura produzida neste seculo: ha manifestamente uma cultura filosofica das linguas românicas (ou dos ...
openaire   +2 more sources

PIETOOLS: A Matlab Toolbox for Manipulation and Optimization of Partial Integral Operators

, 2020
In this paper, we present PIETOOLS, a MATLAB toolbox for the construction and handling of Partial Integral (PI) operators. The toolbox introduces a new class of MATLAB object, opvar, for which standard MATLAB matrix operation syntax (e.g.
bergman, das, gohberg, papachristodoulou, peet, shivakumar   +5 more
core   +1 more source