National Institute of Water and Atmospheric Research Ltd

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National Institute of Water and Atmospheric
Research Ltd

• Ship Operations within the NIWA Programme

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National Institute of Water Atmospheric
Research Ltd (NIWA)

• Crown Research Institute (CRI Act) Formed in 1992
  
• Provide Science for Benefit of NZ on a
  Commercially Viable Footing
• All Shares Owned by the Crown
• 600 staff across New Zealand
• Annual Revenue Euro48 m

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NIWAs Science Covers the Environmental Cycle

• Climate and Atmosphere
• Precipitation Rain, Snow
• River and Lakes Flow, Sediments and Aquatic Life
• Estuarine and Coast
• Oceanography
• Marine Geology and Geophysics
• Marine Biology and Fisheries

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• NIWA Vessel Management Ltd
• NIWAs wholly owned subsidiary company
  incorporated
• in 1995 to provide research vessel support for
• NIWAs scientific and fisheries studies

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• NIWA Vessel Management Ltd
• Operates Two Research Vessels
• RV Tangaroa and RV Kaharoa

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RV Tangaroa
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RV Tangaroa, Kaharoa
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RV Tangaroa Specifications

• Ice-Strengthened Multi-disciplinary Research
  Vessel for Fisheries, Science and Hydrography
• Length 70 m
• Beam 14 m
• Draft 7.4 m
• Gross Tonnage 2282 tonnes
• Main engines Wartsila Vasa 8R 32D 4023 bhp
• SOLAS ship in class with DNV

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RV TangaroaDays at Sea
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FISHERIES RESEARCH
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Stock Assessment

• Inputs
• catches
• biomass indices
• Trawl, Acoustics, Egg Production, CPUE
• mean length
• recent age data
• Outputs
• Biomasses B0 Bcurrent BMSY
• Reference yields
• Risk assessment

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Seamount ecology

• Regarded as productive, yet fragile, habitat
• Mounting concerns about the impacts of fishing,
  and particularly in deepwater the slow recovery
  rates from impacts

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Seamount distribution

• Seamounts (100 m) are prominent features of the
  New Zealand bathymetry
• About 800 are known

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BIODIVERSITY STUDIES
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OCEANOGRAPHY
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MARINE GEOLOGY
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SEABED MAPPING
NIWA Operates Two MultiBeam Echosounders SIMRAD
300 Deep Water (30 5,000 m) SIMRAD 3,000
Shallow Water 300KHZ (5 150 m)
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EM300 and EM3000 Pods
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Bathymetry
Kermadec Volcano Study
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Back-scatter
Kermadec Volcano Study
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Geological Interpretation
Kermadec Volcano Study
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Bathymetry
Detail
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Submarine faults
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Natural HazardsSubmarine landslides
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MARINE GEOPHYSICS
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SURVEYS for OIL and GAS INDUSTRY

• Photo Courtesy of Diamond Offshore Drilling Inc

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Tangaroa VoyagesJuly 03 Aug 04

• 8 July -13 July Biophysical Moorings 6
• 13 July - 2 Aug ADCP CTD Survey of the
  Tasman Front
• 2 Aug - 8 Aug Hawkes Bay Faults
  Sea-level Cycles
• 8 Aug -24 Aug Consequences of Earth-Ocean
  Change Prog.
• 25 Aug - 4 Nov Survey of Sea Lanes Foveaux
  Strait
• 4 Nov -10 Nov Biophysical moorings 7
• 11 Nov -11 Dec Estimation of Hoki Middle
  Depth Fish Abund.
• 27 Dec -23 Jan Estimation of Hoki Middle
  Depth Fish Abund.
• 24 Jan - 15 Mar Western Ross Sea Antarctica
• 17 Mar - 15 Apr Solas Air-sea Gas Experiment
  (SAGE)
• 16 Apr - 29 Apr Bouy Deployment for Stanford
  University
• 18 May - 2 Jun Alpine Fault 2 and Past
  Glaciers Survey
• 3 Jun - 8 Jun Biological moorings
• 9 Jun - 27 Jun KUPE Gas Pipeline Route
  Survey

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ANTARCTICAWestern Ross Sea SeaHydrographic and
Biodiversity Voyage

• 24th January 15th March 2004

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Joint New Zealand objectives

• Ministry of Fisheries
• The MFISH objective was to collect information on
  the diversity of marine communities and habitat
  types along the northern Victoria Land coast, and
  around the Balleny Islands

Land Information New Zealand The LINZ objective
was to continue the collection of data, started
during the 2001 voyage, for hydrographic charts
to ensure the safe passage and anchorage of the
increasing number of vessels frequenting the
region.
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Voyage Track Total Distance 7762nm
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Biodiversity Station distribution
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Methods gear types
Van Veelan grab (0.25 sq.m)
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Epibenthic sled
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Rough bottom (orange roughy) trawl
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Beam trawl (4 m wide)
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Hydrographic Survey

• Cape Adare to Cape Hallett Region
• 2072 km2 seabed fully sounded
• Adds to the 1918 km2
• collected in 2001
• New data added to the three hydrographic charts
  published 2002

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• Balleny Islands
• 1035 km2 seabed fully sounded
• Adds to the 6512 km2
• collected in 2001
• New data will be added to the hydrographic chart
  to be published 2004

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SOLAS Sea-Air Gas Experiment (SAGE)
A NZ lead dualtracer experiment involving around
50 scientists, 18 research organisations from 7
countries.
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Objectives
Biogenic production through to atmospheric
processing

• Track a patch of ocean containing a phytoplankton
  bloom stimulated by iron fertilisation through
  the evolution and decline phase in HNLC waters
  E/SE of NZ
• Quantify air-sea gas exchange rates at a variety
  of scales patch (kms withSF6/3He dual tracer),
  micrometeorological (ltkm) and chamber (metre)
  scale
• Quantify role of interface physics near-surface
  turbulence, temperature microstructure
  stratification, wave field, wave breaking and
  wind speed
• Production/uptake of climatically relevant gases
• Biological controls / ecosystem variables
  affecting gas concentration and exchange
  including effects due to increased iron
  availability
• Role of photochemistry in the surface ocean on
  production of CO
• impact and fate of reactive gases (DMS) in the
  lower atmosphere including aerosol (CN)
  production
• Role of aggregation in carbon export processes

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ORH Chatham Rise Acoustic Survey
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One Slide to go
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A Rare English Voyage South