Coasts

Latest news

Two reports released today by NIWA and the Deep South National Science Challenge reveal new information about how many New Zealanders, how many buildings and how much infrastructure could be affected by extreme river and coastal flooding from storms and sea-level rise.

NIWA puts a lot of things in the ocean—instruments tied to moorings, floats that dive up and down measuring what’s going on in the water, and video cameras that monitor fish.

Huge mudslides from November’s earthquakes have wiped out all organisms living in the seabed of the Kaikōura Canyon.

New Zealand continues to punch above its weight in global environmental issues, with three Kiwis seeking a positive change to our oceans in Washington this month.

Our work

NIWA is looking for people who have had a long association with the Hauraki Gulf or Marlborough Sounds to help them with a research project on juvenile fish habitats.

NIWA is developing guidelines and advice to help coastal communities adapt to climate change.

Most of the plastic in the ocean originates on land, being carried to the estuaries and coasts by rivers. Managing this plastic on land before it reaches the river could be the key to stemming the tide of marine-bound plastics. The aim of this project is to understand the sources and fate of plastic pollution carried by urban rivers using the Kaiwharawhara Stream as a case study.
Seagrass beds form an important undersea habitat for small fish, seahorses and shellfish in New Zealand.

Latest videos

Shifting Sands - Tsunami hazard off Kaikoura, NZ

Dr Joshu Mountjoy discusses NIWA's work in assessing the tsunami hazard just south of Kaikoura. 

Find out more about this research. 

Antarctic Coastal Marine Life in a Changing Climate

NIWA marine ecologist Dr Vonda Cummings discusses the likely effects of climate change on marine invertebrates living on the seafloor of the Ross Sea coast.

Next Stop Antarctica

Our Far South is an expedition that aims to raise New Zealanders' awareness of the area south of Stewart Island. Gareth Morgan, Te Radar, scientists and 50 everyday Kiwis are onboard to learn and then share their experience. This is the first video produced by them, showing some of the highlights of the trip so far.

We develop custom environmental monitoring and irrigation flow-control solutions.

We design instruments and systems of instruments. We have full mechanical and electronic CAD capability.

Rob Bell's analysis of the tsunami signature.
Contacts for NIWA Invertebrate Collection staff.

Instrument Systems offers a number of services, including: design, development, manufacture, supply, installation, service and support, calibration, evaluation, hire, training and service contracts.

A cost-effective water level recorder. Comprises a water surface float-driven shaft encoder and internal data logger with rainfall input. Connects directly to compatible communications devices.

When deployed underwater, this self-contained instrument records and analyses water waves. It can trigger other instruments and send alarms via a communications link.

NIWA has a range of online tools and information relating to tides, including a tide forecaster, yearly tide envelopes and storm tide "red alert" days.

Sign up to receive e-newsletter updates about our coasts research.

New posters reveal dynamic seafloor

Three new posters reveal the seafloor of the Cook Strait and Wellington Harbour in high resolution detail for the first time. These posters are the product of recent sophisticated seafloor mapping combined with expert marine geological knowledge acquired over decades. They are the culmination of an exceptional collaborative effort among NIWA researchers.

Welcome to Coasts Update, the new quarterly e-newsletter of NIWA's National Centre for Coasts. In this issue, we report on tsunami research, predicting contaminant accumulation in estuaries, seagrass restoration, and a new set of posters depicting the seafloor of Cook Strait and Wellington Harbour.

Seagrass beds form an important undersea habitat for small fish, seahorses and shellfish in New Zealand.
This unique project is the first systematic attempt to quantify and map environmental values of New Zealand's coastal marine ecosystem.
NIWA has developed an Urban Stormwater Contaminant (USC) model to enable urban planners to predict sedimentation and heavy metal accumulation in estuaries and identify problem areas in order to target mitigation measures.

Coasts Update brings you news of coastal research, events, and workshops at NIWA.

Sign up to the Coasts Update.

Useful information and resources on New Zealand's marine flora and invertebrate fauna.
A powerful magnitude 8.0 earthquake ruptured the seafloor south of Samoa on 30 September 2009, unleashing a destructive tsunami on Samoa, American Samoa, and northern Tonga (Niuatoputapu).
Ocean acidification is the name given to the lowering of pH of the oceans as a result of increasing carbon dioxide (CO2) in the atmosphere.

Watch scientists and crew battle icy conditions in the Ross Sea during New Zealand's International Polar Year Census of Antarctic Marine Life voyage, led by NIWA in 2008.

Estuaries are highly valuable systems that provide enormous economic and cultural benefits to all kinds of people. However, expanding human populations and urban development around estuaries is increasing contaminant loads, with metals and polycyclic aromatic hydrocarbons (PAHs) accumulating in sediments.
Ngā Waihotanga Iho, the estuarine monitoring toolkit for Iwi, has been developed to provide tangata whenua with tools to measure environmental changes in their estuaries. While Ngā Waihotanga Iho is based on sound science principles, it is also underpinned by tangata whenua values.

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All staff working on this subject

Principal Scientist - Coastal and Estuarine Physical Processes
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Principal Scientist - Ecosystem Modelling
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Coastal and Estuarine Physical Processes Scientist
Hydrodynamics Scientist
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Principal Scientist - Marine Ecology
Senior Regional Manager - Wellington
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Marine Invertebrate Systematist
Principal Scientist - Marine Ecology
Fisheries Acoustics Scientist
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Physical Oceanographer
Principal Scientist - Coastal and Estuarine Physical Processes
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Marine Biologist (Biosecurity)
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Marine Ecology Technician
Hydrodynamics Scientist
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Fisheries Scientist
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Marine Ecology Technician
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Principal Technician - Marine Geology
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Principal Technician - Fisheries
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