High-resolution 2D seismic reflection data of the Witch Ground Basin (central North Sea) during research cruise MSM63@en

High-resolution 2D seismic reflection data during research cruise MSM63 in April/May 2017 onboard RV Maria S. Merian. The seismic profiles were acquired with a two-105/105-in3-GI-Gun-array shot at 210 bar every 5 seconds and a 150 m-long streamer with 96 channels and 1.5625 m channel spacing. The resulting shot point distance is approximately 8.75-12.5 m at 3.5-5 kn ship speed. The frequency range of the two-GI-Gun-array is 15-500 Hz. The processing included geometry and delay corrections, static corrections, binning to 1.5625 m and bandpass filtering with corner frequencies of 25, 45, 420, and 500 Hz. Furthermore, a normal-move-out-correction (with a constant velocity of 1488 m/s calculated from CTD measurements) was applied and the data were stacked and then migrated using a 2D Stolt algorithm (1500 m/s constant velocity model).本数据集为2017年4月至5月期间，在玛丽亚·S·梅里安号研究船（RV Maria S. Merian）执行的MSM63科考航次中采集的高分辨率二维地震反射数据。本次地震剖面的采集采用双105/105立方英寸气枪阵列（two-105/105-in³-GI-Gun-array），激发压力设置为210巴，激发间隔为5秒；同时搭配长度150米、含96道且道间距为1.5625米的海洋地震拖缆。当航速为3.5至5节时，采集得到的炮点间距约为8.75至12.5米。该双气枪阵列的激发频率范围为15至500赫兹。数据处理流程包括几何校正与延迟校正、静校正、1.5625米网格分箱处理，以及截止频率分别为25Hz、45Hz、420Hz与500Hz的带通滤波。此外，还施加了动校正（normal-move-out-correction，其采用由温盐深测量（CTD）计算得到的1488米/秒恒定速度）；随后对数据进行叠加处理，并采用二维Stolt算法（2D Stolt algorithm，基于1500米/秒恒定速度模型）完成偏移成像。