Nearshore hydrodynamic measurements in the Gulf Saint Vincent

Dr Graziela Miot Da Silva1, Dr Paul Van Ruth2, Dr Mark Doubell2, Dr Noble Warwick3, Dr Tim Kildea4, Dr  Milena Fernandes4, Paul Malthouse2

1Flinders University, , Australia, 2South Australian Research and Development Institute – SARDI, , , 3Environment Protection Authority – EPA, , , 4SA Water, ,

Nearshore hydrodynamic measurements in Gulf Saint Vincent are limited. The longest wave data record consists of a ~2 year non-directional dataset measured off Seacliff Beach during 1981 and 1982. Directional wave data was produced during the Adelaide Coastal Waters Study but spans just over a month, while other sporadic measurements are not long enough to capture long frequency oscillations, and not readily available to the scientific community or the general public. Coastal research, which is the basis for well-informed management decisions, is therefore often limited to modeled wave and hydrodynamic data. There is an immediate need of long-term measurements of directional waves and nearshore currents in Gulf Saint Vincent that will generate critical information for current coastal management efforts, water quality monitoring programs, navigation, ocean model validation and broader coastal research. Flinders University, the South Australian Research and Development Institute (SARDI), SA Water and the South Australian Environment Protection Authority (SA EPA) are currently developing a partnership in wave and nearshore current data collection to address the significant, ongoing impact of suspended sediments into coastal waters and as a part of a broader monitoring program for the Australian Integrated Marine Observing System (IMOS), which represents a starting point in bridging this gap. The program will commence in July 2019, with the deployment of a Nortek Sig1000 ADCP off the Adelaide metropolitan coast to supplement quarterly IMOS biogeochemical sampling. All data will be made available online through the IMOS Australian Oceanographic Data Network (AODN).


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