Sediment Profile Imaging (SPI) One of the Sediment Profile Imaging (SPI) camera’s most powerful attributes is its ability to convey ecological information in a format that most people can understand quite easily: a picture. Sediment Profile Imaging (SPI) technology has been used extensively internationally and throughout the United States.  For the past 40 years, SPI […]

A detailed map and dataset of sedimentary habitats of the Milford Haven Waterway (MHW) was compiled for the Milford Haven Waterway Environmental Surveillance Group (MHWESG) from seafloor images collected in May, 2012 using sediment-profile and plan-view imaging (SPI/PV) survey techniques.

Sediment profile imaging (SPI) technology has been used in some form since 1969 to investigate the structure and appearance of near-surface aquatic sediments.

Explosive growth in international trade over the past 30 years has increased the need for dredging to maintain navigable waterways in ports and harbors worldwide.