Measurement of sound velocity and what sensor to use

There are currently two methods of obtaining sound speed in the oceans: calculating sound velocity from other physical parameters and measuring sound velocity directly

Measuring ocean currents for efficient seismic surveys

The demand for oil and gas drives exploration and production in to more and more complex environments. Grant Jennings and William Kikendall report

Determination of real-time tide information using GPS

David Russell and Pieter Toor report on developments in the offshore positioning and navigation markets

Current profiler boost for ports and terminals

Vertical measuring zones (bins) can always be referenced to height below the surface, says Aanderaa Data Instruments

Precision microwave radar-based wave and sea level sensor

Hazardous zone rated, requires no re-calibration and only minimal service attention, making it a suitable sensor for wave monitoring applications

High performance, hull-mounted side scan sonar

The StarFish 450 Series is designed to be 'Plug and Play', connecting to a Windows PC or laptop via a USB connection

3D seismic data: taking a smarter approach to interpretation

The demand for computational tools to underpin the 3D seismic interpretation process has never been more apparent. Jeremy Cresswell reports

Seismic survey commences in eastern Gulf of Mexico

Seismic data processing will be undertaken by Spectrum's data processing and imaging facility in Houston

LED lanterns mark coral reef

Tideland Signal's SolaMAX-155 lanterns will mark the coral reef around Rodrigues Island in the Indian Ocean

Locating the ultra-deep water edges of the Arctic with satellites

Knowing accurately where continents start and end has many implications, not least for those staking a claim to the oil and gas reserves in the Arctic. New satellite sensing techniques are beginning to provide some answers. Sean Ottewell reports

Sensor upgrades for deepwater survey AUVs

Tony George presents a comparison of data collected with the first and second generation autonomous underwater vehicles

Understanding the importance of cable cleats in offshore industries

Richard Shaw discusses the dangers posed by incorrectly cleated cables.

Adapt and innovate to survive impact of the financial crisis

Dr Neil Grosse looks at how the financial crisis that has impacted all areas of the global economy, not least the seismic and hydrographic industry.

Challenging times as doubts raised over CSEM technique

Life in the controlled source electromagnetic survey camp remains challenging, reports Jeremy Cresswell.

Survey data vital to selecting routes for subsea pipelines

Long subsea pipelines need a safe and stable route to shore. Pat Fournier, Senior Geophysicist with Australia's Neptune Marine Services, explains the need for good quality survey data from beneath the seabed



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