| Identifier |
PrefLabel |
Definition |
Date |
| INVEST_BOX |
Box core investigation |
A geotechnical site investigation carried out with the intention of recovering soft sediment samples from the seafloor using a sampling technique consisting of a weighted box which penetrates into the seabed to a depth which depends on its descent rate, and has a blade which closes the base of the box after penetration, thus collecting the sample. |
2016-05-31 |
| INVEST_COMPBORE |
Composite borehole investigation |
A geotechnical site investigation where a narrow shaft is drilled into a substrate with the intention of performing both sampling of soil or rock and in-situ testing such as insertion of instrumented cones into the substrate. |
2016-05-31 |
| INVEST_CPTBORE |
Cone penetration test borehole investigation |
A geotechnical site investigation where a narrow shaft is drilled into a substrate to a pre-selected depth and then, at that depth, an instrumented cone with tip facing down is pushed into the base of the borehole at a controlled rate (also known as borehole cone penetration testing). |
2016-05-31 |
| INVEST_GRAB |
Grab investigation |
A geotechnical site investigation carried out with the intention of recovering sediment samples from the seabed using a device which consists of a bucket or pair of buckets or similar containers which rotate on impact with the seabed, either through a spring trigger or through human intervention and scoop out a sample of sediment. |
2016-05-31 |
| INVEST_PISTON |
Piston core investigation |
A geotechnical site investigation carried out with the intention of recovering samples from seafloor substrate using a sampling technique which consists of a heavy weight, above a long metal tube and secured by a trigger arm. When the metal tube impacts the seabed, the trigger arm is released and the heavy weight falls, strikes the metal tube and drives it deep into the seafloor |
2016-05-31 |
| INVEST_SAMPBORE |
Sample borehole investigation |
A geotechnical site investigation consisting of a narrow shaft drilled into a substrate solely to obtain soil or rock samples |
2016-05-31 |
| INVEST_BEDCPT |
Seabed cone penetration test investigation |
A geotechnical site investigation where a rig is lowered to the seafloor which contains a mechanical system that forces an instrumented cone with tip down into the seabed at a controlled rate. |
2016-05-31 |
| INVEST_SPECBORE |
Specialist borehole investigation |
A geotechnical site investigation where anarrow shaft is drilled into a substrate for specialist in-situ testing which excludes penetration tests by instrumented cones. |
2016-05-31 |
| INVEST_VIBR |
Vibrocore investigation |
A geotechnical site investigation carried out with the intention of recovering samples from the seabed using a sampling technique in which a large diameter tube is vibrated into substrate while oscillating. |
2016-05-31 |
