TAN1405 Voyage Report : Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip (HOBITSS), <i>RV Tangaroa</i>, 10-20 May 2014

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TAN1405 Science Party; Todd, E. (compiler) 2014 TAN1405 Voyage Report : Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip (HOBITSS), RV Tangaroa, 10-20 May 2014. Lower Hutt, N.Z.: GNS Science. GNS Science report 2014/67 86 p. + 1 CD-Rom

Abstract: During 10-20 May 2014 the Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip (HOBITSS) deployed an array of 35 seafloor geophysical observatory instruments along the northern Hikurangi margin, at 29 sites, from the . Lower Hutt, N.Z.: GNS Science. RV Tangaroa (TAN1405). The array comprised of 27 absolute pressure gauges (APG), 15 ocean bottom seismometers (OBS), 3 ocean bottom electromagnetometers (OBEM), and 13 temperature loggers attached to APGs and OBSs. In addition, 2 temperature moorings were deployed at the southern Hikurangi margin. the instruments are from Lamont Doherty Geological Observatory (broadband OBS and trawl-resistant APG), University of Texas Institute of Geophysics (APG), Tokyo University Earthquake Research Institute (short-period OBS and APG), Japan Agency for Marine-Earth Science and Technology (OBEM), and University of Tohoku (APG). Four APGs from Tohoku University were also recovered from the seafloor after being in place for 1 year. All of the instruments deployed on TAN1405 will record continuously and be in place for approximately 1 year until recovered in early-mid 2015. (auth)