Provides a comprehensive review of techniques, examines what geophysical observations reveal about the structure and tectonics of the seabed and the Earth's interior. Covers: the means of locating observations accurately and determining in detail the morphology of the sea floor; the powerful seismic techniques for imaging the Earth's interior from shallow coastal areas to deep-sea trenches; the gravity and magnetic fields over the oceans, heat flow, electrical and radiometric methods and measurements in offshore boreholes; geophysical observations on the development of the modern oceans, the structure of their deep basins, and the nature of their aseismic and seismically active margins.
Locating offshore observations; seabed imaging by sonar and lidar; seismic exploration at sea - a theoretical background; seismic data acquisition at sea; the marine gravity field; the Earth's magnetic field at sea; heat flow; investigations of the sea floor using electrical methods; seabed exploration using electrical methods; geophysics observations in offshore boreholes; deep-sea geophysics and the changing geometry of the oceans; studies of the oceanic lithosphere - the sedimentary cover; studies of the oceanic lithosphere - the crustal basement and upper mantle; investogations of divergent and transform continental margins; studies of subduction zones.