1. Acoustic detection of undersea gas reserves and leaks TG Leighton, B Berges, PR White Faculty of Engineering and the Environment

2. Bubbles are the most powerful underwater sources and scatters of sound Air Waterline Water Micro- phone

3. Methane gas and hydrate in the seabed The assessment of Dillon (1995) is that the global reserve of methane in the form of hydrate is more than twice the worldwide amount of carbon to be found in all known conventional fossil fuels on Earth. Dillon, W. 1995 Gas (methane) hydrates: a new frontier. US Geological Survey, Marine and Coastal Geology Program Fact Sheet, OCLC No.: ocm40490917. Coastal and Marine Geology Program (Geological Survey), US Geological Survey, US Department of the Interior, Woods Hole, MA. 20x the ‘per-molecule’ ‘greenhouse’ warming of CO 2 Anything that generates sound can scatter it:

4. Philosophy: Take current devices, access the raw data, calibrate properly, and quantify bubble size distribution absolutely using off-the-shelf equipment.

5. Field trials West Spitsbergen (August 2011) Oban (May-June 2012)