Results 71 to 80 of about 32,393 (253)

Sediment geochemistry and accumulation rates on the northeastern shelf of the Gulf of Cádiz (SW Iberian Peninsula)

Scientia Marina, 2010
Geochemistry, total organic carbon and total nitrogen of three sediment cores collected in the Gulf of Cádiz and the Guadalquivir prodelta areas in Spain were investigated.
Roberta Guerra, Enrico Dinelli, Serena Righi, Jesús M. Forja, Enrique García-Luque   +4 more
doaj   +1 more source

The HPx software for multicomponent reactive transport during variably-saturated flow: Recent developments and applications [PDF]

, 2018
HPx is a multicomponent reactive transport model which uses HYDRUS as the flow and transport solver and PHREEQC-3 as the biogeochemical solver.
Jacques, Diederik, Mallants, Dirk, Simunek, Jiri, van Genuchten, Martinus Th   +3 more
core   +2 more sources

The Early Upper Palaeolithic in British caves: problems and potential Le Paléolithique supérieur ancien dans les grottes de Grande‐Bretagne : problèmes et potentiels

Journal of the Royal Anthropological Institute, EarlyView.
Recent years have seen landmark progress in our understanding of early Homo sapiens occupation of Europe, owing to new excavations and the application of new analytical methods. Research on British sites, however, continues to lag. This is because of limitations inherent in existing cave collections, and limited options for new fieldwork at known sites.
Robert Dinnis
wiley   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Massive Methane Loss During Seasonal Hypoxia/Anoxia in the Nearshore Waters of Southeastern Arabian Sea

Frontiers in Marine Science, 2020
Repeat observations over the Kochi and Mangalore shelves of the southeastern Arabian Sea (SEAS) during April to December 2012 revealed substantial accumulation of methane (CH4) in the nearshore waters (48.6 ± 34.4 nM) compared to the outer shelf (2.9 ± 0.
V. Sudheesh, G. V. M. Gupta, S. W. A. Naqvi   +2 more
doaj   +1 more source

Palaeowinds and depositional conditions from Holocene loess in Sweden and Finland

Boreas, EarlyView.
The nature of deglacial and Holocene wind regimes in Fennoscandia is debated, as is the degree to which wind‐blown loess deposits exist in the region. Loess deposits in Fennoscandia are often relatively thin, discontinuous and less well‐sorted than typical loess, and questions remain over the degree of their post‐depositional reworking and the impact ...
Calum J. Edward, Thomas Stevens, Anu Kaakinen, Jukka‐Pekka Palmu, Juha‐Pekka Lunkka, Ramona Schneider, Bjarne Almqvist   +6 more
wiley   +1 more source

The Effects of Facies Variability and Bioturbation Intensity on Permeability in a Mixed Siliciclastic–Carbonate Core from the Upper Strawn Group, Katz Field, Eastern Shelf of the Permian Basin, Texas, USA

Geosciences
For oil and gas reservoir characterization, permeability prediction is indispensable because it helps identify potential flow pathways and lowers risk. Estimating permeability in heterogeneous media is challenging due to the limited number of measurement
Jerry L. Jensen, Peter P. Flaig, Kelly E. Hattori   +2 more
doaj   +1 more source

Bioturbation, ecosystem functioning and community structure [PDF]

Hydrology and Earth System Sciences, 2002
The effect of community structure on the functioning of the ecosystem is an important issue in ecology due to continuing global species loss. The influence of infaunal community structure on the functioning of marine systems is proposed here to act ...
C. L. Biles, C. L. Biles, D. M. Paterson, R. B. Ford, M. Solan, D. G. Raffaelli   +5 more
doaj  

Luminescence dating of coastal deposits from the Chanthaburi Plain, Thailand

Boreas, EarlyView.
The ongoing global sea‐level rise urges us to better understand the dynamics of coastal processes for predicting future changes. Sedimentary deposits reflect past coastal environments but require precise chronological data to place evidence into a temporal context.
Margarita Nuss, Sakonvan Chawchai, Savanna Kager, Smith Leknettip, Yunyi Li, Kannika Wangritthikraikul, Frank Preusser   +6 more
wiley   +1 more source

A review on true dung beetles' evolutionary and ecological responses to temperature and impacts on ecosystem functions

Ecological Entomology, EarlyView.
True dung beetles are a speciose group of ecosystem engineers that play key roles as detritivores in natural and agricultural landscapes. Scarabaeine beetles show strong thermal plasticity and there is increasing evidence of rapid evolutionary divergence in response to temperature across ecological and evolutionary timescales, with likely consequences ...
Nathan J. McConnell, Sarah E. Britton, Avi Khanna, Ebony Michelle Argaez, Patrick T. Rohner   +4 more
wiley   +1 more source