Ursula will be presenting tomorrow (15th June) on Low Visibility Monitoring at the workshop on The Effect of Seismic Surveys on the Marine Environment at the European Association of the Geoscientists & Engineers Conference & Exhibition.
The talk will present a review and evaluation of monitoring methods that could be used for marine mammal monitoring for mitigation purposes in periods of low visibility during which the effectiveness of visual observers is reduced. Ursula will outline what low visibility monitoring methods are available and give an outline of their strengths and weaknesses to detect different species in different conditions:
- Passive acoustic monitoring, detects an animal’s vocalisations using hydrophones (underwater microphones)
- Active acoustic monitoring, sound pulses are emitted into the water and acoustic reflections from an animal are received by hydrophones
- Thermal IR (infrared imaging), uses an electro-optical imaging sensor to detect temperature differences between the body or the exhalation of the warm blooded marine mammal and that of the surrounding environment
- RADAR, radio or micro-waves are emitted into the air and echoes from the animal’s body, its exhalation, or from disturbance on the sea surface are picked up by receivers
This work was conducted with our colleagues from the Sea Mammal Research Unit, Marine Ecological Research, the Centre for Research into Ecological and Environmental Modelling, Ocean Environmental Consulting, Alfred Wegener Institute and Prove Systems Ltd and supported by the Joint Industry Programme on E&P Sound and Marine Life – Phase III. Check out the full report and publication if you want to learn more.
If you are at the workshop then we look forward to seeing you there!