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Database Title	9.9 Waikato University Coastal Marine Group Datasets
Keywords Type1. Type 11.	New Zealand coastal; marine; physical processes; bathymetry, sediment type; currents, waves, benthic biota; sea temperature. Stratigraphy.
Abstract	Series of datasets resulting from student and staff research/investigations. This includes: Sea floor mapping- side scan sonar Sediment textural analyses (often with side scan sonar) Currents-tidal and oceanic (using continuous current meters) Wave data, salinity and temperature Seabed stratigraphy Magnetism of seafloor sediment Benthic biota populations and community structure Bathymetry
Geographical Coverage	Variety of North Island locations (numbers from abstract): Whangarei Harbour-1, 2, 3, Manukau -2(some) Pakari-Mangawai and offshore-1,2, 3,4, 5, Westpark Marina-3, Howick Beach/ Pinehaven Marina-1, 2, 3, 4,7 Firth of Thames-1, 2, 6, Waihi Beach-Matarangi (Coramandel)incl Mercury Is-1, 2,3,5 Tauranga Harbour-1(lot), 2 (pts),3+4+5+7(+ offshore) Pukehina-Matata-1, 2, 3, BOP beaches-2, Maketu Harbour-3 Kohi Point-Ohope-1, 2,3, 4, Port Gisborne and Poverty Bay -1,2, 3, 5, 7, Raglan Harbour-1,2 (+ Aotea),3 Port Taranaki and offshore-1, 2, 3, 4, Wainui Beach, Gisborne-1, Hawkes Bay-2
Dataset start date.	Various- 1980 on
Dataset end date.	Current
Status/currency.	In progress
Update frequency.	See below
Maintenance.	There is a lot of raw/interpreted data kept at the university. As yet it has not been collated into a formal "database" that can be readily interrogated.

 

Technical Evaluation
Parameters- what is measured	See Table 1
Parameters- what is calculated	See Table 1
Methods used to measure parameters	See Table 1
Secondary sources of data	Video records
Scale of use.	Various depending on use
Number of records	Numerous
GIS compatibility.	Digital and geographically referenced data is GIS compatible. 1980's analogue data (eg side scan sonar) can not be used electronically.
Available formats for users.	University theses, published papers, reports. Paper and electronic raw and analysed data
Access constraints.	Mostly public although not all is currently easy to access.
Measurement Accuracy	To be completed by database manager.
Completeness of dataset	To be completed by database manager.
Positional accuracy	To be completed by database manager.
Database custodian	University of Waikato
Database custodian contact person	Professor Kerry Black Professor Terry Healy
Database custodian Contact Address Phone Fax Email	Coastal and Marine Group Department of Earth Sciences University of Waikato Private Bag 3105 Hamilton +64 7 856 2889 +64 858 5030 trh@waikato.ac.nz k.black@waikato.ac.nz
References	Many theses, papers and reports.
Date metadata record prepared.	June 2000
Author of metadata record.	Victoria Froude

 

Management Evaluation
Original purpose.	Understanding the effects of a variety of human activities (especially dredging, dredge spoil disposal, sand mining) on the marine environment. Science/quest for knowledge.
Relationships with classification systems.	N/A
Relationships with other databases	Not directly although some other agencies have some parallel datasets covering different locations. Eg: NIWA. Numerical modeling of tidal flows and currents has used the combined NIWA and University of Waikato datasets.
Known relationships with proposed EPIP indicators.	Not known.
Database uses?	Research, management
Public awareness of the database	Low
Database strengths.	Diversity of parameters included Precision and comprehensiveness of measurments
Database limitations.	Not national datsets Not all data readily accessible at this time.

 

What are the Current and Emerging Uses of the Database for:
Assisting with determining historic state/baseline.	Often based on intensive studies at particular times.
Assisting with determining current state/baseline.	Provides quantitative information on the human impacts of activities on benthic biota.
Assisting with modeling possible future outcomes.	Data has been used to develop numerical models on: Tidal flows in and out of NZ estuaries (datasets allow good callibration of models which exist for 60-70% estuaries) Currents
Risk assessment.	Examples include: Assessing the effects of dredging and spoil dumping and sand mining Hydrodynamic predictive models
Monitoring site selection and sample design.	Yes
Aggregating and reporting data locally, regionally or nationally.	Can aggregate some data locally/regionally (eg for a length of coastline or estuary).

 

Table 1: Parameters and methods for the datasets.

Dataset	Parameters measured	Parameters calculated	Methods
Sea floor mapping	Sea floor sediment Seafloor benthic biota e.g. large areas bivalves) Scallop dredge marks depth	Mobility of sediments	Side scan sonar Depth sounder
Sediment texture	Particle size	Particle size analysis	Side scan sonar Physical analysis
Oceanic and tidal currents	Current	Current patterns Tidal flows/volumes	Fixed continuous current meter
Wave data (incl salinity & temp)	Wavelength, amplitude and direction	Wave energetics	Wave rider?
Seabed stratigraphy	?	Stratigraphy below seafloor	Geophysical methods?
Magnetism sea floor sediment	Magnetism seafloor		Marine magnometer
Benthic biota	Species present Species relative abundance	Species diversity	Various
Bathymetry	Water depth	Bathymetric contours	Various