Imaging the plate boundary offshore of the Raukumara Peninsula : the EC005 seismic array deployment

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SR_2006-028-pdf
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Toulmin, S.J.; Bannister, S.C.; Henrys, S.A. 2007 Imaging the plate boundary offshore of the Raukumara Peninsula : the EC005 seismic array deployment. Lower Hutt, N.Z.: GNS Science. GNS Science report 2006/28 75 p.

Abstract: Between February and April 2005, an industry-based marine 2D seismic survey, 05CM, was acquired offshore from the east coast of North Island, New Zealand. This marine survey was primarily targeted at identifying hydrocarbon plays within the East Coast Basin, but the survey also successfully imaged the Pacific Plate subduction interface. Prior to the start of the survey four temporary broadband seismometers were installed with Orion seismic recorders along the east coast of North Island. This onshore array was deployed to record the 05CM airgun shots, and to form the basis for a wide-angle onshore-offshore seismic reflection study (EC005) aimed at resolving physical properties of the subduction interface. Seven permanent broadband GeoNet seismometer stations, clustered along the east coast, were also identified as potential receivers for the EC005 study. This report provides details of the deployment of the temporary EC005 array, and the subsequent initial processing sequence applied to the data from both the temporary stations and the GeoNet stations. (auth)