Theme: Seismic Survey

Seismic survey theme imageEvery month we will focus on a specific theme, featuring a selection of articles which have previously been published in Hydro International magazine. By including a mix of older and more recent articles, we will present a complete recap of the subject. The theme for May 2017 is seismic survey.

Must read

Tsunami Local Alarm System

Tsunamis are in no way a new phenomenon, but the December 2004 tsunami drew attention to warning systems and generated new ideas for those capable of providing timely warning, even when a tsunami is generated near the coast. This article describes such a system, currently at... (read more)
Most read

Surveying for Offshore Wind

Many giants are drilling for oil and gas: the gold of the sea. Since the beginning of the new millennium, however, a new kind of energy potential of the sea has been discovered: wind energy. The fastest way to create substantial amounts of this green energy is to build offsh... (read more)
About the Focus Stories

Every month we will focus on a specific theme, featuring a selection of articles which have previously been published in Hydro International magazine. to present a complete recap of the subject. If you don't want to miss these themed recaps, sign up for the newsletter (sign up here).

Seismic Survey

Surveying the Thames Tunnel Route

Following the suspension of Parliament in the summer of 1858 due to the ‘Great Stink’, an act was passed to allow construction of a network of giant sewers, pumping stations and treatment works beneath London. The system was designed by Sir Joseph Bazalgette and... (read more)

Oceans of Earthquakes

Globally, the proliferation of sensors and resultant explosion of data is growing at exponential rates. Every digital device and sensor is expected to be available day/night to provide instantaneous results. This is possible if sensors are land or space based. This is not th... (read more)

Amplified Sediment Waves in the Irish Sea (AmSedIS)

Large sediment waves are striking yet poorly understood seabed features in many shelf seas. Very large sediment waves (3–18m in height) have been documented to migrate up to 70m per year in the Irish Sea and some sand waves reach heights of up to 36m (Figure 1). Such t... (read more)

Geophysical Instruments for Land, Sea and Air ­Subsurface Investigations

Geometrics Inc., based in San Jose, CA, USA, designs and manufactures rugged, portable and technologically-innovative geophysical instruments for land, sea and air subsurface investigations. The company’s main product lines include high speed cesium magnetometers, expl... (read more)

Mapping Diamondiferous Gravel

An Aquares resistivity survey was carried out in a river in sub-Saharan Africa to map the sub-bottom features of a diamond concession. Diamondiferous gravels were distinguished remotely from bedrock and other soft sediments by the Aquares Resistivity System (ARS), a sub-bott... (read more)
Seismic Survey

The Discovery of Long-Distance Sound Transmission in the Ocean

The existence of the SOFAR Channel has been known for many years. In the American geophysicist Maurice Ewing’s authorised biographical memoir The Floor of the Sea, the following passage occurs: “The first time Ewing’s seismic gear was tried at a thousand fa... (read more)

Autonomous Arctic Drifting Seismic Buoys

Less than 30,000km of seismic profile exist for the Arctic Ocean. Components of a new autonomous drifting seismic buoy have now been successfully tested using the hovercraftR/H Sabvabaa. Three buoys will be deployed in Spring 2009 and could potentially produce over 5,000km o... (read more)

WiMust – A Fleet of AUVs for Seismic Surveys

The ongoing WiMUST (Widely scalable Mobile Underwater Sonar Technology) project aims to design and test a system of cooperating autonomous underwater vehicles (AUVs) that would simplify seismic surveying and offer significant advantage over modern streamer-towing operations.... (read more)

Flexible High-resolution Seismic Method

Traditionally, the upper part of the shallow seabed is investigated using low frequency echo sounders to enable safe navigation, and even lower frequency profilers for seabed structure mapping. However, the results of these systems often lack accuracy and, as a consequence,... (read more)

Offshore Surface ­Geochemical Survey (OSGS)

The all-Russian Scientific Research Institute for Geology & Mineral Resources of the Ocean (VNIIOkeangeologia) is situated in St. Petersburg, Russia and is currently the leading scientific organisation of the Russian Federation Ministry for Natural Resources in the field... (read more)
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