Papers by Jef Vandenberghe
Earth-Science Reviews, 2016
Quantification of sediment volumes in continental to deep ocean basins is key to understanding pr... more Quantification of sediment volumes in continental to deep ocean basins is key to understanding processes of sediment distribution in source-to-sink depositional systems. Using our own and published data we present the first quantification of sediment-volume changes in basins along the course of a major southwest European river during the deglaciation. The salient points of this quantitative record in the Tagus and equivalent North Atlantic basins show crucial roles for sea level, climate and land-use in the distribution of sediments. The bypass of sediments starved the Tagus basins, and subsequently sedimentation mainly occurred on the Tagus Abyssal Plain during the sea-level lowstand of the Last Glacial Maximum. The main sediment depocenter rapidly shifted via the continental shelf to the Lower Tagus Valley during sea-level rise in the deglaciation period. Finally, the main sediment depocenter shifted further landward into the Lower Tagus Valley during sea-level high stand in the Holocene. During the high-stand phase (last 7 ky), sediment flux increased up to 2.5 times, due to climate and land-use changes. The average catchment denudation rate during the last 12 ky (0.04–0.1 mm/y) is in agreement with those of other European catchments. Our study clearly demonstrates the added value of detailed knowledge of 3D depocenter distribution, size and chronology. This allowed us to identify an increased sediment flux during the last 7 ky, which was not identified using local observations from boreholes alone. The uniqueness of the Tagus depositional system lies in the combination of a large accommodation space in the bedrock-confined Lower Tagus Valley, the steep lowstand-surface gradient and the narrow continental shelf with canyons indenting the shelf break.
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Nutrient Cycling in Agroecosystems, 1998
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Quaternary Science Reviews, Jan 1, 2008
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Quaternary International, 2014
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Developments in Paleoenvironmental Research, 2004
... JEF VANDENBERGHE (jef.vandenberghe@falw.vu.nl) Faculty of Earth and Life Sciences Vrije Unive... more ... JEF VANDENBERGHE (jef.vandenberghe@falw.vu.nl) Faculty of Earth and Life Sciences Vrije Universiteit Amsterdam The Netherlands JOHN LOWE (j.lowe@rhul.ac.uk) Department of Geography Royal Holloway University of London Egham Surrey, TW20 0EX UK ...
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Quaternary International, 2014
ABSTRACT Climate impact on the fluvial processes led to morphological and sedimentological differ... more ABSTRACT Climate impact on the fluvial processes led to morphological and sedimentological differentiation of a terrace. This diversity in the fluvial environment determined how people could adapt to the river. Although the climatic impact on development and initiation of river terraces seems to be well accepted, a number of pertinent questions disturb this simplicity. For instance: •The exact terrace development within a climate cycle is still under debate. Different kinds of terraces and their sedimentary successions may originate either from aggradation, incision or lateral migration.•Is there a typical sedimentary succession below terraces? What is the genetic origin of each sedimentary layer?•What are the relative ages of those layers and erosion phases within a climate driven erosion–aggradation cycle? The variability in staircase preservation in relation to climatic cyclicity is analysed in three scenarios. Specific scenarios depend essentially on the preservation of the fluvial deposits dating from the warm periods. Finally, a preliminary inventory is presented of the most favourable sites for human occupation in fluvial valleys as derived from a random selection of archaeological findings. Generally, human occupation in that morphological position seems to be linked with, at least temporarily, dry conditions. Climatic conditions do not seem to play the major role. The termination of a settlement may have been due to increased risks of flooding, apart from other than natural fluvio-environmental reasons.
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Bulletin de l'Association française pour l'étude du quaternaire, 1985
A meandering pattern and a steep incision is the reaction of the Mark river, as well as many Euro... more A meandering pattern and a steep incision is the reaction of the Mark river, as well as many European river systems, to changing conditions of climate and vegetation cover at the start of the Late Glacial. The maximum incision is reached between 1 1 780 and 1 1 920 yr. BP It has ...
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Bulletin de l'Association française pour l'étude du quaternaire, 1985
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Climate of the Past Discussions, 2010
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Papers by Jef Vandenberghe