Survey

SAND Geophysics can provide tailored survey solutions for any marine geophysical projects.

Specialising in ultra-high resolution seismic and unexploded ordnance (UXO) detection SAND can provide the geophysical capability on-board a client provided vessel to support existing capabilities. Alternatively working with our industry partners we can provide a complete survey package.

Sub-Bottom Profiling

SAND can provide high resolution sub-bottom profiling survey’s utilising a number of sources:

  • Chirp
  • Pinger
  • Boomer
  • Sparker
  • Mini-Airgun

All data can be provided in raw or processed industry standard formats and SAND can provide professional interpretations to provide the relevant information for your project.

Specialising in Chirp surveys our expertise in acquiring and processing raw CHIRP data enables us to detect smaller features such as buried pipelines and cables more effectively than standard black-box processing techniques.

Multi-Channel Seismic

SAND can provide ultra-high resolution multi-channel seismic surveys which allow for a significantly improved signal to noise ratio and the removal of seabed multiples. SAND Geophysics utilize specialist high resolution streamers alongside sources which provide the frequency spectrums required for high resolution data SAND can obtain accurate depths and sub-surface geometries.

Using the latest research and experienced data processors SAND Geophysics can calculate acoustic velocities and undertake sediment characterisation increasing the information available from a single survey.

Magnetometer/Gradiometer

SAND specialise in the use of multiple sensor survey arrays for Unexploded Ordnance (UXO) or debris detections surveys, however data can also be interpreted for geological features. We can provide complete management of debris clearance or UXO surveys from survey design through to data reporting. Working alongside the top industry explosive ordnance disposal (EOD) and risk management specialists we can provide UXO clearance or As Low As Reasonably Practicable (ALARP) certification to enable the safe execution of future seabed interactions. To ensure successful projects all our survey solutions are designed on a project by project basis following a review of the threat items and site conditions.

3D Chirp

Working alongside the University of Southampton SAND are proud to be the first commercial provider of 3D-Chirp survey technology.

Ideally suited for object detection and acoustic sediment characterisation the GeoChirp 3D has been developed by the University of Southampton over the past 10 years and is now manufactured by Kongsberg. It is the only decimetre resolution true 3D seismic survey system available and the system has a proven capability to detect buried debris down to 20 cm diameter. The system can provide precise burial depths, object dimensions and now through specialist processing and interpretation techniques it is possible to differentiate between different materials.

For more information on the capabilities of the system please contact us or see the University of Southampton 3D-Chirp website.

Sidescan Sonar

SAND can provide a range of sidescan sonar survey capabilities to suit any project from low frequency wide area survey systems right through to high frequency search and recovery (SAR) systems.

Data can be processed to provide seabed characterisation or habitat maps, as well as for seabed target identification. All data can be provided in raw and/or processed industry standard formats and interpretation reports can be tailored to client requirements.

Other Survey Capabilities

Alongside our core survey expertise SAND can provide a number of additional services to ensure a complete package if required. These include: Survey Positioning, Multibeam Bathymetry (including backscatter), single beam bathymetry, current profiling (ADCP), Acoustic Ground Discrimination (AGDS) etc.

Please contact us with your survey requirements for more details.