Tasman Sea

Reference numbers; Vertical spatial coordinates; Air pressure; Atmospheric humidity; Raw fluorometer output; Gravity; Bathymetry and Elevation; Seismic reflection; Seismic refraction; Raw suspended particulate material concentration sensor output; Salinity of the water column; Temperature of the water column; Metadata parameters; Sound velocity and travel time in the water column; Horizontal spatial co-ordinates; Platform or instrument orientation; Electrical conductivity of the water column; Air temperature; Raw light meter output; Wind strength and direction

Anemometers; fluorometers; bathythermographs; thermosalinographs; multi-channel seismic reflection systems; multi-beam echosounders; salinity sensor; seismometers; Differential Global Positioning System receivers; transmissometers; water temperature sensor; meteorological packages

This dataset consists of measurements of underway meteorology, navigation and sea surface hydrography, seismic reflection and refraction, and bathythermograph data collected during a comprehensive survey of the Tonga-Kermadec island arc-deep-sea trench system, undertaken between April and June 2011. Data were collected on RV Sonne cruise SO215 by an integrated marine geophysical experiment that comprised simultaneous seismic reflection (MCS) and wide-angle (WA) refraction, gravity, magnetic, bathymetry and sub-seabed high-resolution imaging of the Louisville Ridge-Tonga-Kermadec Trench collision system. This cruise formed the field component of NERC Discovery Science project "The Louisville Ridge-Tonga Trench collision: Implications for subduction zone dynamics". The key scientific objectives for the cruise were as follows: a) Determine the 'background' crustal and uppermost mantle structure of the subducting plate; b) Determine the crustal and uppermost mantle structure across and along the Louisville Ridge; c) Determine the physical properties of the leading edges of the subducting and over-riding plates; d) Determine the state of isostasy, ridge-related flexure and moat characteristics at the Louisville Ridge, and the mechanical properties of the subducting and over-riding plates; e) Determine the seafloor morphology and collision-related deformation in the Tonga forearc. The Discovery Science project was composed of Standard Grant reference NE/F004273/1 as the lead grant with child grant NE/F005318/1. The lead grant ran from 01 Mar 2011 - 31 Aug 2016 and the child grant ran from 01 Oct 2010 - 30 Sep 2014. Professor Christine Peirce of University of Durham, Department of Earth Sciences was the principal investigator of the lead grant of this project. Prof Anthony Watts of University of Oxford, Earth Science was the principal investigator of the child grant. The bathythermograph data have been received by BODC as raw files from the RV Sonne, processed and quality controlled using in-house BODC procedures and will be made available online soon. The remaining data have been received by BODC as raw files from the RV Sonne and are available on request.

Paulatto M (2014) Potential field and high-resolution bathymetry investigation of the Monowai volcanic centre, Kermadec Arc: implications for caldera formation and volcanic evolution, ; Peirce C (2013) Flexural properties of pre- and post-subduction lithosphere - the influence of large-scale plate loads, ; Robinson A (2014) Crustal and Upper Mantle Structure of the Louisville Ridge Seamount Chain at Its Intersection with the Tonga-Kermadec Subduction Zone, ; Robinson A (2014) Construction and subduction of the Louisville Ridge Seamount Chain - insights from wide-angle seismic imaging, ; Stratford W (2012) Louisville Ridge subduction at the Tonga-Kermadec trench: preliminary velocity models from wide-angle seismics, ; Stratford W (2015) Seismic velocity structure and deformation due to the collision of the Louisville Ridge with the Tonga-Kermadec Trench, ; Stratford W (2012) Louisville Ridge subduction at the Tonga-Kermadec trench: preliminary velocity models from wide-angle seismics, ; Stratford W (2013) Subduction of Louisville Ridge seamounts: effects on Tonga-Kermadec trench and forearc morphology and seismic structure, ; Watts A (2013) The Behavior of the Lithosphere on Seismic to Geologic Timescales, ; Allan M (2011) Relation between the dissolution rates of single minerals and reservoir rocks in acidified pore waters, ; Bassett D (2013) Crustal structure and seismicity associated with seamount subduction: a synthesis of results from the Tonga-Kermadec Trench-Louisville Ridge collision zone, ; Funnell M (2014) Crustal Structure and Flexural Characteristics of the Louisville Ridge and Tonga-Kermadec Subduction System, ; Funnell M (2014) Structure and deformation of the Kermadec forearc in response to subduction of the Pacific oceanic plate, ; Funnell M (2013) Structure and deformation of the Tonga-Kermadec subduction system in the Louisville Ridge pre-collision zone, ; Hunter J (2012) Gravity and flexure modelling of subducting plates, ; Knight T (2012) Louisville Ridge subduction at the Tonga-Kermadec trench: preliminary models to compare pre- and post-collision zone crustal velocity structure, ; Paulatto M (2012) Potential field and bathymetric contraints on volcanism and tectonics at the submarine Monowai cone and caldera (Kermadec arc),

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