Willem H. J. Toonen

Events, episodes, and phases: Signal from noise in flood-sediment archives

Major floods have increased in frequency in many parts of the world, and this is often attributed to anthropogenic climate change. Because of the short length of most gauged records (∼50 yr), it is unclear whether these events represent a short-term anomaly or a shift to a prolonged flood-rich period. In this paper, we use event-scale paleoflood records from upland and lowland floodplains to demonstrate the relationship between individual flood events, clusters of events in multiyear episodes, and multidecadal- to centennial-scale flood-rich phases. Catchment- and regional-scale data show that individual events and episodes generally fall within extended flood-rich phases controlled by climate. Furthermore, contrary to recent suggestions that environmental signals may be rendered incomplete in fluvial systems by autogenic processes, from a multidecadal (and longer) perspective it is clear that floodplain environments can register and preserve a useful multiscale hydromorphic signal of climate change.

Theban harbours and waterscapes survey, 2013

Report on the 2014 season of the Theban Harbours and Waterscapes Survey. The paper discusses topographic survey and data correction for the West Bank of Thebes and geoarchaeological investigation of the Temple of Millions of Years of Amenhotep III and the area to the east of the Ramesseum.

Theban Harbours and Waterscapes Survey, Spring 2016

Report on the 2016 spring season of the Theban Harbours and Waterscapes Survey (THaWS). The article discusses the geoarchaeological and geophysical survey along a 3.2 km-long transect starting close to the front of the Temple of Millions of Years of Ay and Horemheb and stretching to the village of Geziret el-Bairat on the West Bank of the Nile.