Abstract Seabed pockmarks are among the most prominent morphologic structures in the oceans. They are usually interpreted as surface manifestation of hydrocarbon fluids venting from sediments. Here we suggest an alternative hypothesis of pockmark formation based on latest multibeam echosounder data with a centimeter resolution. In the North Sea, >40,000 enigmatically shaped shallow depressions or ‘pits’ with a mean depth of 0.11 m were documented, that do not resemble known pockmark morphologies. Combining the new echosounder data with information from behavioral biology, physical oceanography, satellite remote sensing and habitat mapping, we conclude that harbor porpoises excavate sediments during benthic foraging. By grubbing the seabed, ...
International audienceAbout a decade ago, a large field of pockmarks, covering an overall area of 36...
We used existing bathymetric data to study the macrofauna of a geophysical pockmark field restricted...
Some of the highest density pockmark fields in the world have been observed on the northwest Austral...
Pockmarks are one of the most obvious and abundant structural features of the North Sea seabed, yet ...
Pockmarks have now been recognised for nearly four decades, and are one of the most obvious and abun...
Pockmarks are seafloor depressions commonly associated with fluid escape from the seabed and are bel...
Enigmatic seafloor gouge marks at depths of 1700-2100m have been observed from submersible during ge...
Enigmatic seafloor gouge marks at depths of 1700-2100 m have been observed from submersible during g...
Some of the highest density pockmark fields in the world have been observed on the northwest Austral...
Acoustic imaging has revealed more than 7000 pockmarks on the seafloor above the Troll East gas fiel...
Acoustic imaging has revealed more than 7000 pockmarks on the seafloor above the Troll East gas fiel...
Pockmarks are concave seabed depressions formed by the venting of sub-seabed fluids into the water c...
Underwater gas and liquid escape from the seafloor has long been treated as a mere curiosity. It was...
Pockmarks are seafloor craters usually formed during methane release on continental margins. Howeve...
Pockmarks are seabed depressions that represent primary evidence of rapid biogenic/thermogenic gas b...
International audienceAbout a decade ago, a large field of pockmarks, covering an overall area of 36...
We used existing bathymetric data to study the macrofauna of a geophysical pockmark field restricted...
Some of the highest density pockmark fields in the world have been observed on the northwest Austral...
Pockmarks are one of the most obvious and abundant structural features of the North Sea seabed, yet ...
Pockmarks have now been recognised for nearly four decades, and are one of the most obvious and abun...
Pockmarks are seafloor depressions commonly associated with fluid escape from the seabed and are bel...
Enigmatic seafloor gouge marks at depths of 1700-2100m have been observed from submersible during ge...
Enigmatic seafloor gouge marks at depths of 1700-2100 m have been observed from submersible during g...
Some of the highest density pockmark fields in the world have been observed on the northwest Austral...
Acoustic imaging has revealed more than 7000 pockmarks on the seafloor above the Troll East gas fiel...
Acoustic imaging has revealed more than 7000 pockmarks on the seafloor above the Troll East gas fiel...
Pockmarks are concave seabed depressions formed by the venting of sub-seabed fluids into the water c...
Underwater gas and liquid escape from the seafloor has long been treated as a mere curiosity. It was...
Pockmarks are seafloor craters usually formed during methane release on continental margins. Howeve...
Pockmarks are seabed depressions that represent primary evidence of rapid biogenic/thermogenic gas b...
International audienceAbout a decade ago, a large field of pockmarks, covering an overall area of 36...
We used existing bathymetric data to study the macrofauna of a geophysical pockmark field restricted...
Some of the highest density pockmark fields in the world have been observed on the northwest Austral...