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

[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. [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.本数据集包含2015年10月至2016年7月期间，取自维斯内萨海脊（Vestnesa Ridge）的10个月连续海底地震仪（Ocean Bottom Seismometers, OBS）数据，仅包含地震仪的垂直分量通道数据。该数据集配套发表于以下论文：Domel P、Singhroha S、Plaza-Faverola A、Schlindwein V、Ramachandran H及Bünz S（2022）的《西斯瓦尔巴大陆边缘活跃渗漏点维斯内萨海脊的地震仪记录短时信号成因与周期性行为》，刊载于《前沿地球科学》（Frontiers in Earth Science），卷10，文章编号831526，DOI: 10.3389/feart.2022.831526。此外，本数据集还包含用于计算甲烷溶解度的Excel电子表格。 短时事件（Short Duration Events, SDEs）在全球范围内的海底地震仪（OBS）观测中均有报道。由于其高频（4~30 Hz）且持续时间极短，这类事件通常被归因于非地震源，例如冷渗漏（cold seeps）相关的流体运移过程、生物信号或环境噪声。本研究介绍了在西斯瓦尔巴大陆边缘维斯内萨海脊的活跃渗漏点部署为期10个月（2015年10月至2016年7月）的OBS台阵被动地震实验结果。研究采用常规的短时平均/长时平均（Short-Time Average over Long-Time Average, STA/LTA）方法对SDEs及其时间分布特征进行了刻画。信号周期图显示，SDEs存在与太阳、月球周期相关的周期性模式。对该区域SDEs发生频次与模拟潮汐的月度相关性分析表明，潮汐对10个月观测到的SDEs存在部分调控作用。SDEs的数量在潮汐极值（极小值与极大值）附近出现增长，其中与潮汐高潮的相关性更为显著。大规模的SDEs爆发会被阶段性的平静周期所分隔。与之相反，对震颤信号的周期性分析则呈现出不同的模式，这可能是受潮汐调控的水下水流对观测仪器的影响所致。我们推测，维斯内萨海脊的SDEs可能与甲烷渗漏系统的动力学过程相关，该系统的特征是深部流体运移、天然气水合物（gas hydrate）形成以及海底气体通过裂隙的平流输送之间的复杂相互作用。我们在西斯瓦尔巴近海研究区域的观测结果，与其他大陆边缘的SDEs研究记录相一致，这些区域的微地震活动与向水柱中释放的气体之间似乎存在关联。