TY - JOUR PY - 2012// TI - Observing storm surges from space: Hurricane Igor off Newfoundland JO - Scientific reports A1 - Han, Guoqi A1 - Ma, Zhimin A1 - Chen, Dake A1 - Deyoung, Brad A1 - Chen, Nancy SP - 1010 EP - 1010 VL - 2 IS - N2 - Coastal communities are becoming increasingly more vulnerable to storm surges under a changing climate. Tide gauges can be used to monitor alongshore variations of a storm surge, but not cross-shelf features. In this study we combine Jason-2 satellite measurements with tide-gauge data to study the storm surge caused by Hurricane Igor off Newfoundland. Satellite observations reveal a storm surge of 1 m in the early morning of September 22, 2010 (UTC) after the passage of the storm, consistent with the tide-gauge measurements. The post-storm sea level variations at St. John's and Argentia are associated with free equatorward-propagating continental shelf waves (with a phase speed of ~10 m/s and a cross-shelf decaying scale of ~100 km). The study clearly shows the utility of satellite altimetry in observing and understanding storm surges, complementing tide-gauge observations for the analysis of storm surge characteristics and for the validation and improvement of storm surge models.

Language: en

LA - en SN - 2045-2322 UR - http://dx.doi.org/10.1038/srep01010 ID - ref1 ER -