May, S. M., Engel, M., Brill, D., Cuadra, C., Lagmay, A. M. F., Santiago, J., Suarez, J. K., Reyes, M. and Brueckner, H. (2015). Block and boulder transport in Eastern Samar (Philippines) during Supertyphoon Haiyan. Earth Surf. Dyn., 3 (4). S. 543 - 559. GOTTINGEN: COPERNICUS GESELLSCHAFT MBH. ISSN 2196-632X
Full text not available from this repository.Abstract
Fields of dislodged boulders and blocks record catastrophic coastal flooding during strong storms or tsunamis and play a pivotal role in coastal hazard assessment. Along the rocky carbonate coast of Eastern Samar (Philippines) we documented longshore transport of a block of 180 t and boulders (up to 23.5 t) shifted upslope to elevations of up to 10 m above mean lower low water level during Supertyphoon Haiyan on 8 November 2013. Initiation-of-motion approaches indicate that boulder dislocation occurred with flow velocities of 8.9-9.6 m s(-1), which significantly exceeds depth-averaged flow velocities of a local coupled hydrodynamic and wave model (Delft3D) of the typhoon with a maximum < 1.5 ms(-1). These results, in combination with recently published phase-resolving wave models, support the hypothesis that infragravity waves induced by the typhoon were responsible for the remarkable flooding pattern in Eastern Samar, which are not resolved in phase-averaged storm surge models. Our findings show that tsunamis and hydrodynamic conditions induced by tropical cyclones may shift boulders of similar size and, therefore, demand a careful re-evaluation of storm-related transport where it, based on the boulder's sheer size, has previously been ascribed to tsunamis.
| Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||
| Creators: |
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| URN: | urn:nbn:de:hbz:38-418702 | ||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.5194/esurf-3-543-2015 | ||||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Earth Surf. Dyn. | ||||||||||||||||||||||||||||||||||||||||
| Volume: | 3 | ||||||||||||||||||||||||||||||||||||||||
| Number: | 4 | ||||||||||||||||||||||||||||||||||||||||
| Page Range: | S. 543 - 559 | ||||||||||||||||||||||||||||||||||||||||
| Date: | 2015 | ||||||||||||||||||||||||||||||||||||||||
| Publisher: | COPERNICUS GESELLSCHAFT MBH | ||||||||||||||||||||||||||||||||||||||||
| Place of Publication: | GOTTINGEN | ||||||||||||||||||||||||||||||||||||||||
| ISSN: | 2196-632X | ||||||||||||||||||||||||||||||||||||||||
| Language: | English | ||||||||||||||||||||||||||||||||||||||||
| Faculty: | Unspecified | ||||||||||||||||||||||||||||||||||||||||
| Divisions: | Unspecified | ||||||||||||||||||||||||||||||||||||||||
| Subjects: | no entry | ||||||||||||||||||||||||||||||||||||||||
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| URI: | http://kups.ub.uni-koeln.de/id/eprint/41870 |
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