All Products Seismology Geology Biology Acoustics Pressure Housing and Titanium

A versatile and highly modular monitoring instrument for shelf seas

Storing CO₂ in subsea geological formations onshore and offshore is a promising way of capping greenhouse gas emissions. The storage process however disturbs geological formations and can induce microseismic events which have to be monitored.

The K.U.M. TIAMAT ocean bottom node is an innovative and cost-effective solution for the long-term monitoring of those subsea CO₂ storage formations. It is highly modular and can be operated either autonomously for extended periods or cabled for real time data transmission.

For optimal adaption to various monitoring requirements, the TIAMAT nodes can be equipped either with broadband seismometers or with geophones. The flat outline is designed to withstand displacement by bottom trawling fisheries and reduce current-induced noise to an absolute minimum. For monitoring of a complete storage site a deployment of multiple TIAMAT nodes is required. Several deployment configurations are possible.

  • Autonomous, ideal for baseline seismicity detection
  • Cabled and buoy-aided, ideal for realtime event detection
  • Cabled and infrastructure-tied, ideal for realtime event detection
  • Autonomous with acoustic or optical modem for remote data retrieval

Features & Benefits

Optimized for shelf seas

Due to its flat design the Tiamat is resilient against bottom trawling fishing gear and reduces current-induced noise.

High flexibility

Designed to adapt to different requierements, various sensor options combined with different deployment options make this system modular and cost effiecent.

Autonomous or cabled deployment

Tiamat ocean bottom nodes can be be operated autonomous for long-term monitoring or cabled if real-time data transmission is needed.

Easy handling

Tested in field use, the Tiamat has proven to be a robust and reliable ocean bottom node easy to handle and to deploy.

Specifications

Weight and dimensions

Weight in air223 kg
Weight in water51 kg
Width1600 mm
Breadth1600 mm
Height400 mm

Technical data

Operation depth200 m (POM) 1000 m (titanium)
Operation time24 months (80 Li cells, triaxial geophone sensor), 13 months (80 Li cells, broadband seismometer)
Anchor Size1600 mm x 1600 mm
Seismic sensors120 s broadband seismometer or 3 Hz geophones
Pressure sensorHydrophone HTI-96 or differential pressure gauge (DPG) or absolute pressure gauge (APG)
Data logger for autonomous deploymentK.U.M. 6D7: 4-channels at 32 bit with 142 dB dynamic range. Sampling rates: 100, 250, 500, 1000, 2000 sps
Data logger for cabled deploymentNanometrics CENTAUR GEN5: 6-channels at 32 bit with 146 dB dynamic range
Releaserintegrated releaser, based KumQuat 562 technology
Optical modem for remote data retrievalThird party device. Specs. upon request
Acoustic modem for remote data retrievalThird party device. Specs. upon request