Video Time Lapse Camera data of hydrocarbon bubble release at natural seeps in Mississippi Canyon and Green Canyon, northern Gulf of Mexico, November 2010 – March 2014

This data was collected using a Video Time Lapse Camera (VTLC) at various vents in the GoM to observe spatial and temporal variation in hydrocarbon bubble release at natural seeps. The video data provided are from individual vents in lease blocks GC600 and MC118. Observations with the VTLC captured the formation of individual bubbles as they were released through partly exposed deposits of gas hydrate. Bubble size, and environmental changes over time (i.e. bacterial mat coverage) can be determined from video clips. A semi-automatic bubble counting algorithm (SABCA) was developed to analyze bubble count and release measurements from video data. This method is suitable for discrete vents with small bubble streams commonly seen at seeps. It is adjustable to multiple settings, and in situ set-ups (refer to MATLAB code and SABCA description in file). Additionally, to determine a relationship between bubble release and pressure changes, a RbRduo pressure and temperature sensor was deployed with the VTLC to determine if there was a correlation between bubble release rates, and tidal fluctuations. Deployments include GC600-Birthday-Candles-11-26-2010 at 27.3643 -90.5637; GC600-Mega-Plume-11-14-2012 at 27.37007 -90.57093; MC118-Ruddyville-07-24-2013 at 28.85227 -88.49218; and GC600-Mega-Plume-03-09-2014 at 27.3701 -90.5709

本数据集借助视频延时相机（Video Time Lapse Camera, VTLC）在墨西哥湾（Gulf of Mexico, GoM）的多处喷口采集所得，用于观测天然渗漏处烃类气泡释放的时空变化特征。所提供的视频数据来自GC600与MC118租赁区块内的单个喷口。利用VTLC开展的观测记录了单个气泡从部分裸露的天然气水合物沉积物中释放并形成的完整过程。通过视频片段可测定气泡尺寸，以及随时间推移的环境变化（如细菌垫覆盖度）。本研究开发了半自动气泡计数算法（Semi-automatic Bubble Counting Algorithm, SABCA），用于分析视频数据中的气泡数量与释放量。该方法适配渗漏处常见的带有小型气泡流的离散喷口，支持多场景调节，可兼容原位部署设置（详见文件中的MATLAB代码与SABCA说明文档）。此外，为探究气泡释放与压力变化的关联，本研究将RbRduo压力温度传感器与VTLC同步部署，以分析气泡释放速率与潮汐波动间的相关性。本次部署的观测点位包括：2010年11月26日的GC600-Birthday-Candles-11-26-2010（坐标27.3643, -90.5637）；2012年11月14日的GC600-Mega-Plume-11-14-2012（坐标27.37007, -90.57093）；2013年7月24日的MC118-Ruddyville-07-24-2013（坐标28.85227, -88.49218）；以及2014年3月9日的GC600-Mega-Plume-03-09-2014（坐标27.3701, -90.5709）