Heatflow

Bremen Heat Probe

The Bremen Heat Probe is an in-house development of a Lister-type marine heat flow probe. The instrument is capable of a penetration depth up to 6 mbsf, using 21 thermistors. It is rated for water depth of 6000 m. We use it for hydrothermal vent search, for mid-ocean ridge flank investigations as well as in mud volcano research with or without gas hydrates. Instrument weight is 1.5 to in air.

Those heat probes are nowadays available via FIELAX.

Heat flow at the South West Indian Ridge, PS86, 2013

Miniaturized Temperature Logger (MTL)

MTLs are precision thermometers, developed for deep water applications, short term and long term. They are rated at 1 mK resolution, 0.1 K accuracy, and 600 bar housing resistance. Sampling rate can be up to 1 Hz or deployment time can be up to several years.

MTLs: 1 mK resolution, 1 Hz sampling frequency, 6000 m water depth, that's tough.

MeBo Temperature Tool

The sea floor drill rig can be equiped with a temperature tool at the very tip. The temperature sensor is pushed below bottom level of the well to gain undisturbed formation temperatures. The instrument is based on the MTL technology.

High Temperature Tool

How hot is a submarine hot vent? To answer this question, a high temperature tool for ROV operation at hot vents and seeps was developed. This one is capable of measuring up to 600°C in water depth up to 6000 m. An online data transmissionin is included so the ROV-pilot has immediate control over the operation.