Gridded bathymetry data obtained by multibeam echosounder during HEINCKE cruises HE417, HE432, HE441, HE447, HE470 and HE471 between March 2014 and September 2016@en

1. Gridded bathymetry data obtained by multibeam echosounder (MBES; Kongsberg EM710 onboard R/V Heincke) with a spatial resolution of 1.0 m x 1.0 m or 0.5 m x 0.5 m. Until July 2015, the seafloor was largely flat and featureless. From August 2016, shallow craters and mounds can be observed. In combination with increased methane concentrations in bed sediment samples, the craters have been identified as pockmarks.

本数据集为搭载于海因克号（R/V Heincke）科考船的康斯伯格EM710型多波束测深声呐（multibeam echosounder, MBES）获取的网格化水深地形数据，空间分辨率为1.0 m×1.0 m或0.5 m×0.5 m。截至2015年7月，该海底区域整体平坦且无明显地貌特征。自2016年8月起，可观测到浅层凹坑与丘状地貌。结合底沉积物样品中甲烷浓度升高的检测结果，上述凹坑已被鉴定为麻坑（pockmarks）。