Methods and apparatus for determining seismic streamer array geometry and seismic sensor response

A method for marine seismic surveying using a plurality of seismic sensors which are spaced apart and towed, the method comprising:

• determining at least a value for a depth of each of the plurality of seismic sensors in a body of water, the seismic sensors each including a pressure responsive sensor and a motion responsive sensor;
• determining a ghost time delay based on at least the value for the depth;
• cross ghosting seismic signals detected by each motion responsive sensor and each pressure responsive sensor to obtain a cross ghosted motion responsive signal and a cross ghosted pressure responsive signal, wherein the cross ghosting uses a calibration factor for each seismic sensor;
• computing a difference between the cross ghosted motion responsive signal and the cross ghosted pressure responsive signal for each of the seismic sensors;
• adjusting at least the value for the depth of each of the seismic sensors based on .the difference;
• repeating determining the ghost time delay, cross ghosting the seismic signals, computing the difference, and
• repeating the adjusting at least the value for the depth, determining the ghost time delay, cross ghosting the seismic signals, and computing the difference until the difference falls below a selected threshold.