Recent Advances in Technology

Marine Seismic Sources Part XI: Effect of Seismic on Crabs

In previous editions of GEO ExPro we have discussed the effect of seismic shooting on mammals and fish. What about animals without ears, like the crab? In this article, we discuss how the crab’s hearing system works and report from a Canadian research project investigating the effects of seismic shooting on snow crabs.

Marine Seismic Sources Part X: Seismic Surveys and Fish

The possible effects of seismic surveys on fish and fisheries have been given a great deal of media attention in Norway. Here, we summarise results from the Fish Rock experiment offshore Scotland.

Marine Seismic Sources Part IX: Seismic Surveys and Fish

What is known about the impact of seismic surveys on fish and fisheries?

Marine Seismic Sources Part VIII: Fish Hear A Great Deal

To understand how human-generated sounds affect fish it is necessary to understand how and what fish can hear, and how they respond to different types of sounds.

Illuminating Resolution

The latest developments in high-tech seismic vessels and ‘mega’ channel counts both on and offshore have driven a revolution in seismic data acquisition.

Marine Seismic Sources Part VI: High Frequency Signals From Air-Guns

Only a few studies have been published which describe measurements of the air-gun signals in the kilohertz (kHz) frequency range. In this article we propose and discuss models for the generation of these high frequencies from air-gun arrays.

Marine Seismic Sources Part V: The Hearing Of Marine Mammals

Marine Seismic Sources Part IV

The 1956 documentary The Silent World by Jacques-Yves Cousteau wowed audiences with its vibrant depiction of aquatic life. But the Silent World is far from silent.

Marine Seismic Sources Part III

How do you get a feeling for the difference between decibels in air and in the sea? What is the loudest bang reported? What is the loudest animal in the sea? What is the similarity between a seismic water gun and the pistol shrimp? Read on4