446 km on one segmented line of seismic reflection survey of Cape-North Island (New Zealand) area

Gravity; Seismic reflection

Multi-channel seismic reflection systems; seismic refraction systems; gravimeters; satellite positioning systems

In December 1990 a Crustal Seismic Reflection Profile has been conducted in cooperation with the Department of Scientific and Industrial Research in the area of East Cape, North Island, New Zealand. The objective of the research was to study the lower crustal-upper mantle structure across the convergent margin and extensional back-arc basin of northern New Zealand. During the survey a total amount of 440 km has been covered on 2 lines. The seismic data have been collected with the following sampling parameters: Coverage = 3000 % Sample Rate = 4 ms Shot Interval = 50 m Streamer Length = 3000 m Streamer Depth = 12 m Group Interval = 25 m Number of Groups = 120 Record Length = 16 sec Air-Guns: - Total Volume = 45.16 l - Pressure = 140 bar - Depth = 6 m

National Institute of Oceanography and Applied Geophysics - OGS, Division of Geophysics
Borgo Grotta Gigante 42/c
Sgonico (Trieste),

34010
Italy