Nutrient and chlorophyll a distributions were measured monthly for two years as part of the Port Phillip Bay Environmental Study. Reported data focuses on northern Port Phillip Bay during periods of high runoff in September 1993 and low runoff in January 1995. Measurements were collected via continuous profiling aboard ship, resolving features over scales of about 200 meters.
Use Cases
- Analyze spatial variability of nutrient concentrations based on ammonium, nitrate, nitrite, phosphate, and silicate measurements.
- Model the impact of freshwater runoff events on marine nutrient patterns based on data from high and low runoff periods.
- Identify distinct nutrient sources based on ammonium/salinity and silicate/salinity relationships mentioned in the description.
- Assess biomass abundance and internal nutrient recycling based on chlorophyll a concentration data.
Strengths
- High-resolution spatial data with measurements resolved over scales of about 200 meters.
- Specific concentration ranges are provided for ammonium (<0.5-40 mM), oxidised N (<0.2-20 mM), phosphate (<1-8 mM), and silicate (<1-80 mM).
- Data collection method described: continuous profiling technique with measurements every 10 seconds.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect temporal bias inherent to the two specific study periods (1993, 1995).
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Continuous profiling technique aboard ship, with flow-segmented colorimetric analysis.
- Time Range
- Monthly intervals over two years, with detailed periods September 1993 and January 1995.
- Freshness
- Last updated 2026-04-16 16:21:42.190773; freshness should be verified.
- Geography
- Northern Port Phillip Bay, Victoria, Australia.