Denudation and land cover change are of high relevance for Earth surface and landscape dynamics and the transfer of solutes and sediments from headwater systems through main stem of drainage basin systems to the world oceans. Denudational hillslope and fluvial processes, associated source-to-sink fluxes and sedimentary budgets are controlled by a range of environmental drivers and anthropogenic activities, exacerbated by the consequences of climate change.
The better understanding of possible effects of ongoing and accelerated environmental changes on present-day denudation requires systematic and quantitative studies on the actual drivers of denudational and land cover processes. Only if we have an improved quantitative knowledge of drivers and rates of contemporary denudational hillslope and fluvial processes as well as of the sediment and hydrological connectivity across a range of different spatio-temporal scales and selected climatic zones, the possible effects of anthropogenic impacts and natural disturbances on terrestrial landscape systems could be detected and better assessed. Scientific focus is on the geomorphic effects and consequences of increased frequencies, durations and intensities of dry spells, droughts, fires, storms, extreme rainfall events and floods, of accelerated permafrost thawing, glacier retreat, earthquakes, and of mineral exploration, mining exploitation and infrastructure constructions.
Special attention should be given to selected cold climate, temperate, arid and tropical regions that are expected to react particularly sensitive to ongoing and accelerated environmental changes.
This session includes contributions from geomorphology, hydrology, agricultural science, soil science, geotechnics and environmental engineering. The presentations cover a wide range of different spatial scales, from hillslope and small headwater systems to large drainage basin systems. The session brings together and discusses a wide range of advanced techniques and methods of data collection and generation, including field-based, laboratory-based, remotely-sensed and dating techniques together with various approaches and methods of data analysis and geomorphologic modelling.
This session is co-organized by the IAG Working Group on Denudation and Environmental Changes in Different Morphoclimatic Zones (DENUCHANGE).