Abstract
New South Wales (NSW) often experiences periods of coastal inundation and estuarine flooding. One of the causal mechanisms of these episodes are coastal shelf waves (CSW), generated by synoptic disturbances (Church et al., 2006). CSWs in Australia often result from wind stress, mostly along mid-latitudes (e.g., the Great Australian Bight) and propagate anticlockwise (Woodham et al., 2013). However, there are no tools available for identifying and characterising CSWs and as such there is very little information on the magnitude, frequency, duration, and spatiotemporal variability. This paper aims to: (1) develop a method to identify and track CSWs using the existing ocean tide gauge network, (2) identify patterns in the frequency, duration, and magnitude of CSW, and (3) assess the factors that affect the frequency, duration, and magnitude of CSWs along the NSW coast.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/oigzYIKFBmA
Highlights
New South Wales (NSW) often experiences periods of coastal inundation and estuarine flooding
OBJECTIVES & METHODS This paper aims to: (1) develop a method to identify and track coastal shelf waves (CSW) using the existing ocean tide gauge network, (2) identify patterns in the frequency, duration, and magnitude of CSW, and (3) assess the factors that affect the frequency, duration, and magnitude of CSWs along the NSW coast
To identify extreme events, a peak over threshold (POT) analysis was conducted on the filtered residual datasets and an extreme event was defined as occurring when the POT had a minimum duration of six hours
Summary
New South Wales (NSW) often experiences periods of coastal inundation and estuarine flooding. OBJECTIVES & METHODS This paper aims to: (1) develop a method to identify and track CSWs using the existing ocean tide gauge network, (2) identify patterns in the frequency, duration, and magnitude of CSW, and (3) assess the factors that affect the frequency, duration, and magnitude of CSWs along the NSW coast. The first stage of the study was to conduct an extreme value analysis on residual records of coastal water levels from ocean tide gauges along the NSW coast.
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