Multibeam bathymetry processed data (EM 120 echosounder dataset compilation) of RV METEOR & RV MARIA S. MERIAN during cruise M76/1 & MSM19/1c, Namibian continental slope@en

The data contain bathymetric data from the Namibia continental slope. The data were acquired on R/V Meteor research expeditions M76/1 in 2008, and R/V Maria S. Merian expedition MSM19/1c in 2011. The purpose of the data was the exploration of the Namibian continental slope and espressially the investigation of large seafloor depressions. The bathymetric data were acquired with the 191-beam 12 kHz Kongsberg EM120 system. The data were processed using the public software package MBSystems. The loaded data were cleaned semi-automatically and manually, removing outliers and other erroneous data. Initial velocity fields were adjusted to remove artifacts from the data. Gridding was done in 10x10 m grid cells for the MSM19-1c dataset and 50x50 m for the M76 dataset using the Gaussian Weighted Mean algorithm.本数据集包含纳米比亚大陆坡的水深测量数据（bathymetric data）。数据采集自2008年流星号（R/V Meteor）考察航次M76/1，以及2011年玛丽亚·S·梅里安号（R/V Maria S. Merian）考察航次MSM19/1c。本次数据采集的目标为勘探纳米比亚大陆坡，重点针对大型海底洼地开展调查研究。本次水深测量数据采用191波束、12 kHz的康士伯（Kongsberg）EM120系统采集获取。数据处理工作依托公开软件包MBSystems完成。加载后的原始数据经半自动结合人工的方式开展清洗操作，剔除异常值及其他错误数据。对初始速度场进行校正以消除数据中的伪影。本次网格化处理采用高斯加权平均算法：MSM19-1c数据集使用10×10米的网格单元，M76数据集则采用50×50米的网格单元。