BODC Cruise Metadata Report for RRS Discovery (74E3) cruise D343

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information
A summary of BODC data holdings for the cruise from the
- National Oceanographic Database
- Projects Database
References - including cruise tracks and cruise reports

Cruise Inventory Information

Long name	RRS Discovery (74E3) cruise D343
Short name	D343
Objectives and Narrative	Testing of theAutosub6000 AUV, its systems and safe control to as deep as possible up to 6000 m Testing of collision avoidance system based on scanned sonar collision avoidance sensor Testing of: Dual CT, LSS (Light scattering sensor), EH probe and magnetometer and Mulitbeam sonar Participation of two researchers from University of Birmingham who are developing a fault diagnosis system for Autosub6000 Test of the HYBIS system in as deep water as possible (NOCS, Southampton). Testing of Acoustic and Satellite Telemetry systems (POL, Liverpool). To develop and test remote measurement technologies, deep water communication systems and a compact version of the MYRTLE (multi-year return tide level equipment) long term deep water recoverable lander. The cruise began with initial tests of the Autosub6000 AUV in the Celtic deep, followed by deep tests of the AUV to 5600m on the Iberian Abyssal plain. HYBIS also carried out a successful deep test in this location. The majority of the work for the Autosub6000, HYBIS and the POL telemetry tests were carried out further south over and around the Casablanca seamount. A high percentage of the tests were successful.
Ship	RRS Discovery
Departure Port	Govan, United Kingdom
Departure Date	2009-09-27
Arrival Port	Govan, United Kingdom
Arrival Date	2009-10-15
Principal Scientist(s)	Stephen D McPhail (National Oceanography Centre, Southampton)
Responsible Organisation	National Oceanography Centre, Southampton
Associated Project(s)	Oceans 2025
IHB Sea Areas Visited	North East Atlantic Ocean (limit 40W)
Marsden Squares Visited	110
Work Area Description	North East Atlantic
Unable to lookup cruise bounds at this time
Work Area Bounding Polygon
Southern Limit	unknown
Northern Limit	unknown
Western Limit	unknown
Eastern Limit	unknown

Cruise Inventory Datasets

Geology and geophysics
Bottom photography	Quantity: activity duration in hours = 12 Description: Video recordings of the flanks and over the summit area of the Casablanca Seamount centred on N 32 44.4, W 13 15.1. Data recorded for test purposes only.
Multi-beam echosounding	Quantity: survey square kilometres = 20 Description: High (3m) resolution, AUV collected, Multibeam Sonar over the flanks and summit area of the Casablanca Seamount, centred on N 32 44.4, W 13 15.1. Data recorded for test purposes only.