A5023501632- Geology and Paleoclimatology Research
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Marine and environmental studies
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Coastal wetland ecosystem dynamics
- Coastal and Marine Dynamics
- Reservoir Engineering and Simulation Methods
- Isotope Analysis in Ecology
- Hydrology and Sediment Transport Processes
- earthquake and tectonic studies
- Archaeology and ancient environmental studies
- Landslides and related hazards
- Flood Risk Assessment and Management
- Geological and Geochemical Analysis
- Pleistocene-Era Hominins and Archaeology
- Soil erosion and sediment transport
- Drilling and Well Engineering
- Seismic Imaging and Inversion Techniques
- Maritime and Coastal Archaeology
- Geochemistry and Geologic Mapping
- Marine and coastal ecosystems
- Ancient and Medieval Archaeology Studies
- Paleontology and Stratigraphy of Fossils
Woods Hole Oceanographic Institution
2016-2025
University of Bucharest
2024
Woodwell Climate Research Center
2016
International Ocean Discovery Program
2016
Universität Hamburg
2014
University of Miami
2014
Discovery Place
2014
Texas A&M University
2014
Stony Brook University
2001-2002
State University of New York
2001-2002
ABSTRACT A process‐based facies model for asymmetric wave‐influenced deltas predicts significant river‐borne muds with potentially lower quality reservoir in prodelta and downdrift areas, better sand updrift areas. Many ancient barrier‐lagoon systems ‘offshore bars’ may be reinterpreted as components of large‐scale deltaic systems. The proposed is based on a re‐evaluation several modern examples. An asymmetry index defined the ratio between net longshore transport rate at mouth (in m 3 year...
The collapse of the Bronze Age Harappan, one earliest urban civilizations, remains an enigma. Urbanism flourished in western region Indo-Gangetic Plain for approximately 600 y, but since 3,900 y ago, total settled area and settlement sizes declined, many sites were abandoned, a significant shift site numbers density towards east is recorded. We report morphologic chronologic evidence indicating that fluvial landscapes Harappan territory became remarkably stable during late Holocene as...
Spanning a latitudinal range typical for deserts, the Indian peninsula is fertile instead and sustains over billion people through monsoonal rains. Despite strong link between climate society, our knowledge of long‐term monsoon variability incomplete subcontinent. Here we reconstruct Holocene paleoclimate in core zone (CMZ) using sediment recovered offshore from mouth Godavari River. Carbon isotopes sedimentary leaf waxes provide an integrated regionally extensive record flora CMZ document...
Abstract Marine algae are instrumental in carbon cycling and atmospheric dioxide (CO 2 ) regulation. One group, coccolithophores, uses to photosynthesize calcify, covering their cells with chalk platelets (coccoliths). How ocean acidification influences coccolithophore calcification is strongly debated, the effects of carbonate chemistry changes geological past poorly understood. This paper relates degree coccolith cellular calcification, presents first records size-normalized thickness...
Terrestrial vegetation and soils hold three times more carbon than the atmosphere. Much debate concerns how anthropogenic activity will perturb these surface reservoirs, potentially exacerbating ongoing changes to climate system. Uncertainties specifically persist in extrapolating point-source observations ecosystem-scale budgets fluxes, which require consideration of vertical lateral processes on multiple temporal spatial scales. To explore controls organic (OC) turnover at river basin...
Research Article| January 01, 2008 Holocene erosion of the Lesser Himalaya triggered by intensified summer monsoon Peter D. Clift; Clift 1School Geosciences, University Aberdeen, Aberdeen AB24 3UE, UK Search for other works this author on: GSW Google Scholar Liviu Giosan; Giosan 2Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Jerzy Blusztajn; Blusztajn Ian H. Campbell; Campbell 3Research School Earth Sciences, Australian National University, Canberra, ACT 0200,...
The complex interplay of climate shifts over Eurasia and global sea level changes modulates freshwater saltwater inputs to the Black Sea. dynamics hydrologic from Late Glacial into Holocene remain a matter debate, information on how these affected ecology Sea is sparse. Here we used Roche 454 next-generation pyrosequencing sedimentary 18S rRNA genes reconstruct plankton community structure in last ca. 11,400 y. We found that 150 2,710 species showed statistically significant response four...
The fragility of the world's deltas is not solely a consequence rising ocean waters. Human fresh water use predominant force behind receding coastlines.
Over the last century humans have altered export of fluvial materials leading to significant changes in morphology, chemistry and biology coastal ocean. Here we present sedimentary, paleoenvironmental paleogenetic evidence show that Black Sea, a nearly enclosed marine basin, was affected by land use long before Industrial Era. Although watershed hydroclimate spatially temporally variable over ~3000 years, surface salinity dropped systematically Sea. Sediment loads delivered Danube River,...
[1] Wave-influenced deltas, with large-scale arcuate shapes and demarcated beach ridge complexes, often display an asymmetrical form about their river channel. Here, we use a numerical model to demonstrate that the angles from which waves approach delta can have first-order influence upon its plan-view morphologic evolution sedimentary architecture. The directional spread of incoming plays dominant role over fluvial sediment discharge in controlling width active lobe, turn affects...
River deltas, low-lying landforms that host high concentrations of human population and ecosystem services, face a new, mostly unknown, future over the coming decades centuries. Even as some deltas experience decreased sediment supply from damming, others will see increased discharge land-use changes. There are proposals to actively use riverine build new land counteract delta loss. We present novel approach understanding morphology by quantifying balance between river inputs largely...
Pleistocene and future South Asian monsoon rainfall are linked to greenhouse gases, ice volume, southern hemisphere moisture.
Research Article| September 01, 2006 Young Danube delta documents stable Black Sea level since the middle Holocene: Morphodynamic, paleogeographic, and archaeological implications Liviu Giosan; Giosan 1Department of Geology Geophysics, Woods Hole Oceanographic Institution, 360 Road, Hole, Massachusetts 02543, USA Search for other works by this author on: GSW Google Scholar Jeffrey P. Donnelly; Donnelly Stefan Constantinescu; Constantinescu 2Department Geography, University Bucharest, North...
Research Article| March 01, 2012 U-Pb zircon dating evidence for a Pleistocene Sarasvati River and capture of the Yamuna Peter D. Clift; Clift 1School Geosciences, University Aberdeen, Aberdeen AB24 3UE, UK, Key Laboratory Marginal Sea Geology, South China Institute Oceanology, Chinese Academy Sciences, 164 Xingangxi Road, Guangzhou 510301, Search other works by this author on: GSW Google Scholar Andrew Carter; Carter 2Department Earth Planetary Birkbeck College London, Malet Street, London...
Abstract The Indus drainage has experienced major variations in climate since the Last Glacial Maximum ( LGM ) that have affected volumes and compositions of sediment reaching ocean time. We here present a comprehensive first‐order source‐to‐sink budget spanning time . show buffering floodplain accounts for ca 20–25% mass flux. Sedimentation rates varied greatly must been on average three times recent, predamming rates. Much was released by incision fluvial terraces constructed behind...