GEOL463
Marine seismic source - airgun
High-pressure air bubble released into water
nOperating pressure 10-15 MPa, released in 1-4 ms;
nSize (volume of the lower chamber) 10-2000 in3 (0.16-33 liters);
nCan shoot every 15-20 sec;
nHighly repeatable source,
consistent
signal.