Replication data for: Origin and periodic behavior of short duration signals recorded by seismometers at Vestnesa Ridge, an active seepage site on the west-Svalbard continental margin

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Replication data for: Origin and periodic behavior of short duration signals recorded by seismometers at Vestnesa Ridge, an active seepage site on the west-Svalbard continental margin
Domel, Przemyslaw; Singhroha, Sunny; Plaza-Faverola, Andreia; Schlindwein, Vera; Ramachandran, Hariharan; Bünz, Stefan, 2021, "Replication data for: Origin and periodic behavior of short duration signals recorded by seismometers at Vestnesa Ridge, an active seepage site on the west-Svalbard continental margin", https://doi.org/10.18710/TCWUQN, DataverseNO, V1
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[description] This dataset contains 10-months of continous ocean bottom seismometers (OBS) data from Vestnesa Ridge (October 2015 - July 2016). Only vertical channels of seismometers are included. This data is used in in the article: Domel P, Singhroha S, Plaza-Faverola A, Schlindwein V, Ramachandran H and Bünz S (2022) Origin and Periodic Behavior of Short Duration Signals Recorded by Seismometers at Vestnesa Ridge, an Active Seepage Site on the West-Svalbard Continental Margin. Front. Earth Sci. 10:831526.doi: 10.3389/feart.2022.831526. In addition, this dataset contains excel spreadsheet used for calculating methane solubility. (2022-02-09)
[article abstract ] Short duration events (SDEs) are reported worldwide from ocean-bottom seismometers (OBSs). Due to their high frequency (4-30 Hz) and short duration, they are commonly attributed to aseismic sources, such as fluid migration related processes from cold seeps, biological signals, or noise. We present the results of a passive seismic experiment that deployed an OBS network for 10-months (October 2015-July 2016) at an active seepage site on Vestnesa Ridge, West Svalbard continental margin. We characterize SDEs and their temporal occurrence using the conventional short-time-average over long-time-average approach. Signal periodograms show that SDEs have periodic patterns related to solar and lunar cycles. A monthly correlation between SDE occurrences and modelled tides for the area indicates that tides have a partial control on SDEs recorded over 10 months. The numbers of SDEs increase close to the tidal minima and maxima, although a correlation with tidal highs appears more robust. Large bursts of SDEs are separated by interim quiet cycles. In contrast, the periodicity analysis of tremors shows a different pattern, likely caused by the effect of tidally controlled underwater currents on the instrumentation. We suggest that SDEs at Vestnesa Ridge may be related to the dynamics of the methane seepage system which is characterized by a complex interaction between migration of deep sourced fluids, gas hydrate formation and seafloor gas advection through cracks. Our observation from this investigated area offshore west-Svalbard, is in line with the documentation of SDEs from other continental margins, where micro-seismicity and gas release into the water column are seemingly connected. (2022-02-09)
Subject Earth and Environmental Sciences
Keyword ocean bottom seismic (OBS), short duration events, gas hydrates, Vestnesa Ridge, ocean tides, methane solubility
Related Publication Domel P, Singhroha S, Plaza-Faverola A, Schlindwein V, Ramachandran H and Bünz S (2022) Origin and Periodic Behavior of Short Duration Signals Recorded by Seismometers at Vestnesa Ridge, an Active Seepage Site on the West-Svalbard Continental Margin. Front. Earth Sci. 10:831526. doi: 10.3389/feart.2022.831526 doi: 10.3389/feart.2022.831526
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Methane_Solubility.xlsm
application/vnd.ms-excel.sheet.macroEnabled.12 - 46.4 KB
Published Feb 15, 2021
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MD5: e4c0f368e929c20da684be268d95239d
Calculations from the methane solubility model used in the paper
Methane_Solubility.pdf
Methane_Solubility.pdf
Adobe PDF - 460.0 KB
Published Feb 15, 2021
35 Downloads
MD5: 5830c9e8e2945c57a6ff81344098819e
Pdf of the plots generated using the spreadsheet
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OBS1.zip
ZIP Archive - 4.1 GB
Published Feb 15, 2021
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MD5: 541a7006592b2dc0aa0fee23fcb2f5e7
Vertical channel files of OBS-1
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OBS4.zip
ZIP Archive - 15.2 GB
Published Feb 15, 2021
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MD5: f1a1f987a52f589885268b93881a8026
Vertical channel files of OBS-4
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Stations.txt
Plain Text - 123 B
Published Feb 15, 2021
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MD5: 4fc379ef810ae2131d2159dd7a6bacb2
Geographical locations of the OBS deployments
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OBS5.zip
ZIP Archive - 10.0 GB
Published Feb 15, 2021
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MD5: 64797d6b893c20e06797cdfde5448a03
Vertical channel files of OBS-5
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00_ReadMe.txt
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Published Feb 15, 2021
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MD5: 96cf0da89d5b4876aae87ed4a2ea0c98
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