On natural gas venting and preliminary results on subsidence in Cartagena bay (Colombia)

Mud and emissions are reported in the region. A multibeam survey carried out during 2015-2016 in the Bay of Cartagena showed numerous pockmarks (20m in diameter, 3m in depth) in the flat mud surrounding mud volcanoes in that area evidencing active natural gas venting in the south of the Bay. The observation of coastal land loss related to natural gas venting in the neighboring continental shelf and in situ high vertical resolution DGPS in the Bay confirm the existence of subsidence in the area.