2D multichannel seismic reflection processed data (GI Gun entire dataset) of RV METEOR during cruise M154/1

This 2D multi-channel seismic dataset was acquired during METEOR cruise M154-1 offshore Montserrat in April 2019. The dataset contains ~600 km of normal-moveout-corrected, stacked and migrated vertical seismic profiles. Aim of the seismic experiment was to map and image landslide deposits offshore Montserrat. The data was collected with a 81 m to 152 m-long (16 to 65 channels) streamer system with a group spacing of 1.56 m. The system consisted of two to seven 12.5 m-long active sections, a 25 m-long vibro-stretch section and a 31 to 40 m-long tow cable. As seismic source, two GI airguns (105/105 cubic inch) were shot every five seconds. Seismic data processing included trace editing, highpass filtering (25 Hz cut and 55 Hz slope corner frequencies), denoising, deconvolution, normal moveout correction, stacking and finite-difference migration with a gradient velocity model (1580 m/s to 1725 m/s). Detailed information on the data acquisition can be found in the M154-1 cruise report (https://doi.org/10.2312/cr_m154_1).

本二维多道地震数据集采集于2019年4月蒙特塞拉特岛近海的METEOR科考航次M154-1。该数据集包含约600千米经过正常时差校正（normal moveout, NMO）、叠加与偏移处理的垂直地震剖面。本次地震实验的目标是对蒙特塞拉特岛近海的滑坡沉积体进行成像与编绘。数据采集采用长度81米至152米（16至65道）的拖缆系统，道间距为1.56米。该系统包含2至7段长度为12.5米的有源段、1段25米长的振动拉伸段，以及一段31米至40米长的拖曳电缆。地震震源采用两台GI气枪（105/105立方英寸），每5秒激发一次。地震数据处理流程包括道编辑、高通滤波（截止频率25Hz，斜率拐角频率55Hz）、去噪、反褶积、正常时差校正、叠加以及基于梯度速度模型（1580米/秒至1725米/秒）的有限差分偏移。关于数据采集的详细信息可参阅M154-1航次报告（https://doi.org/10.2312/cr_m154_1）。