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Database Title |
12.3.5 Estuarine sediment database |
|---|---|
| Keywords Type1. Type 11. |
Coastal; estuarine; sediment Coramandel Peninsula |
| Abstract | This data set contains sediment characteristics for a number of sites in the Tairua and Whangapoua estuaries. The purpose of this data set is to monitor long-term trends in sediment characteristics in these estuaries. |
| Geographical Coverage | Tairua and Whangapoua estuaries, eastern Coromandel. |
| Dataset start date. | 1991-1992 |
| Dataset end date. | In progress |
| Status/currency. | Current |
| Update frequency. | It is intended that sites will be the sampled every 10-15 years. |
| Maintenance. | - |
Technical Evaluation |
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| Parameters- what is measured | Grain size |
| Parameters- what is calculated | Mean grain size, sorting, principal mode, skewness etc. |
| Methods used to measure parameters | Sediment samples are collected from survey transects with sampled site distances
being measured from transect benchmarks. Subtidal samples are collected by
scuba. Transect benchmarks are being surveyed as resources permit, to establish
sample site co-ordinates within 5m and levels within 0.1m.
Sediment samples are washed and after the removal of the coarse shell fraction, sieved. Sediment size parameters are then calculated. |
| Scale of use. | - |
| Number of records | 120 samples Tairua; 140 samples Whangapoua. |
| GIS compatibility. | Yes. As resources permit, the data is being entered into a GIS database to produce permit of various sediment size parameters for the two estuaries. |
| Available formats for users. | Excel spreadsheets; graphs; tables |
| Access constraints. | No restrictions |
| Measurement Accuracy | To be completed by database manager. |
| Completeness of dataset | To be completed by database manager. |
| Positional accuracy | Each site located to within 5m. |
| Database steward | Environment Waikato |
| Database custodian | Environment Waikato |
| Database custodian contact person | Environmental information desk |
| Database custodian Contact Address Phone Fax |
401 Grey Street Hamilton East +64 7 856 7184 +64 7 86 0551 inforeq@wairc.govt.nz |
| References | - |
| Data metadata record prepared. | June 2000 |
| Author of metadata record. | Victoria Froude |
Management Evaluation |
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| Original purpose. | To monitor the effect of land use activities on estuarine sediment properties. |