Coastal Recovery Following the Destructive Tsunami of 2004: Aceh, Sumatra, Indonesia
The Sedimentary Record
We describe the recovery of coastal landforms in Aceh, Sumatra after the hugely destructive Indian Ocean tsunami of December 26, 2004, using three sets of IKONOS images at a resolution of 1 m.The image sets were taken about two years before the tsunami, immediately following the tsunami, and about one year after the tsunami.We found a remarkably efficient recovery in progress, building new depositional forms seaward of the eroded coastline that effectively obliterate the morphological signals
... hological signals of the tsunami. Such detailed observations covering a long stretch of coast are now possible due to the availability of high-resolution satellite images.To the best of our knowledge this is the first time-based study of the recovery of a long stretch of coast (175 km) after catastrophic destruction by a tsunami.We suggest that tectonic coasts, like the one discussed here, may undergo similar changes periodically on a geological time-scale.Thus, it is possible that morphological evidences of catastrophic tsunamis are not necessarily preserved in the geological record.