Australia, Blog, coastal flooding, Journal paper, science, sea level, storm surge

New paper just published – land sinks around parts of Australia with passage of tropical cyclones.

We have just had a new paper (‘Non-linear motions of Australian geodetic stations induced by non-tidal ocean loading and the passage of tropical cyclones’) published in the journal of Journal of Geodesy – see here.

In this paper we examined movements in land around Australia using time-series from stations fitted with continuous GPS. Most people think the land is completely stable, but actually the land moves each day by a few millimetres for a variety of reasons. Here we show that land around parts of Australia sunk when cyclone Yasi crossed the Australian coast in January/February 2011. This cyclone generated a large storm surge and the extra weight of this large volume of water near the coast actually resulting in the land dropping slightly.

A earlier study (see here) showed the same thing happens around the North Sea coastlines when big storm surges happen there.





Blog, coast, coastal flooding, extreme events, flooding, science, sea level, storm surge

Storm surge animation – Super Typhoon Haiyan

Animation of storm surge of Super Typhoon Haiyan making landfall:

The model predicts maximum surge levels exceeding 5 metres near Tacloban City. The peak surge occurs some time after the cyclone has made landfall. At this point, the winds near Tacloban City change direction from easterly to southeasterly, and the cyclone starts pushing water into San Pedro and San Pablo Bay (i.e. the northwesterly part of Leyte Gulf).