Land instruments used by Department of earth science
GEO hold a range of commercial and self-designed equipment specialized to equip a variety of geological field studies. These include for example speleology, soft sediment coring, geological mapping, sub surface profiling, seismic, section logging and sampling for exposure dating. Terrestrial field work at GEO are mainly connected to the research groups Quaternary Earth Systems and Basin and Reservoir Studies.
Chirp SB-424
The EdgeTech 3100 a portable (45 kg) Sub-bottom Profiler used to visualize features down to c. 40m (clay) sub-bottom in up to 300m water depth. The SB-424 towfish operates at 4-24 kHz and can be used from smaller boats.
GPR
Ground penetrating radar (GPR)
We have two types of GPR at EARTHLAB. The Malå GPR system has antennas of 200mHz, 100mHz (RTA), 50mHz (RTA) and 25mHz (RTA), and a Blue Systems Ice radar system with 20 mHz, 10 mHz, 5 mHz, and 2.5 mHz antennas for mapping glacier thickness and englacial ice structures. The ice radar can both be used on skies, snowmobile or by helicopter.
HTH - gravity corer
The HTH gravity corer is a small (7 kg) hand operated gravity corer typically used to extract 30-50 cm long sediment cores of the water-sediment interface.
https://www.pylonex.com/files/2016-06/leaflet-hth-corer-ny.pdf (external link)
Uwitec Piston corer
The Uwitec piston corer with re-entry system enables long sediment cores at water depths up to 140 m. The coring system is operated from a raft using electrically powered winches. The corer itself consist of 2 m long 90 mm PVC liners in a stainless steel liner, and the stationary piston system makes the operator able to retrieve contiguous 2 m sections. The corer has a rubber sleeve core catcher, and may be operated with up to 100 kg hammer weight. The Uwitec piston corer has been shown to successfully obtain up to 50 m long sediment cores.
For specs. and operating instructions see: http://www.uwitec.at (external link)
Nesje Piston corer
The piston corer (Nesje-corer) is a versatile coring system that may be operated by hand, or by power winch, from lake/sea ice or raft. The corer uses 6m long (up to 12 m tubes have been successfully used) 100 mm PVC tubes with a stationary piston system hammered in to the sediments with a 30 kg weight.
Ice corer
Kovacs Ice Drilling Eq. Mark II lightweight hand operated ice corer. The Mark II coring system retrieves a 90 mm diameter ice core up to 1 meter long.
Sercel Unite nodes
Sercel Unite nodes og recording-units for landseismikk.
Seismic recording system: Sercel 428 Lite
Seismic recording nodes: 120 x Unite RAU3, each with 3 channels and external Powerfit batteries.
Geophones: Sercel SG-10, 480 strings with 4 sensors each, plant geophones type.
3 component geophones: R.T.Clark DT-Solo 10Hz, 30 geophones.
Hydrophones: Sercel P-44A 10Hz, 30 hydrophones.
Hydrophones: R.T.Clark DT44-14A 10Hz, 30 hydrophones.
Calibrated hydrophone: Teledyne Reson TC-4040-3. 1 hydrophone w/pre-amp. VP1000.
http://www.sercel.com/products/Lists/ProductSpecification/Unite_brochure... (external link)
Trilobit nodes
