Cook Strait

7 June:  All is well on the Revelle and today marks the start of the second high resolution seismic survey of the cruise. We have traveled to the southern reach of the North Island and are now collecting data from southern end of the Hikurangi margin. In contrast to the northern area, more sediment is available on the incoming plate to form the accretionary wedge. The main purpose of the seismic survey in this area is to collect a grid of lines across interesting features seen in single profiles in order to understand their structure in three dimensions. This region is characterized by the presence of spectacular reflection patterns indicative of the presence of methane hydrates. Stay tuned for reflection images of both field areas!


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