Results 81 to 90 of about 17,401 (230)

Hydrochemical Characteristics of Four Retreating Glacier Forefields Off the Coast of Admiralty Bay (King George Island, Maritime Antarctic): Diverse Sources of Metals and Metalloids

Land Degradation &Development, Volume 37, Issue 4, Page 1330-1352, 28 February 2026.
ABSTRACT This study examines the impact of geological, marine and anthropogenic sources on metal and metalloid concentrations in the forefields of four glaciers (Ecology, Sphinx, Tower and Windy) on King George Island, Antarctic. Water samples were collected at the beginning and end of the hydrological season (austral summer, December 2021 to February ...
Joanna Potapowicz, Krystyna Kozioł, Joanna Plenzler, Robert Józef Bialik, Justyna Dudek, Marcin Frankowski, Anetta Zioła‐Frankowska, Sara Lehmann‐Konera, Żaneta Polkowska   +8 more
wiley   +1 more source

Characterisation of tire wear particles and their chemical markers: A case study along a German highway

Case Studies in Chemical and Environmental Engineering
This case study investigates tire wear particles (TWP) and their chemical markers (6PPD-Q, DPG, 2-OHBT) in road dust and roadside soils along a German highway.
Faith Chebet Tumwet, Karin Fester, Stanislava Vrchovecká, Traugott Scheytt   +3 more
doaj   +1 more source

Is Vostok lake in steady state? [PDF]

, 2004
Stable-isotope (D and 18O) data from the Vostok (East Antarctica) ice core are used to explore whether or not subglacial Vostok lake is in isotopic steady state. A simple box model shows that the lake is likely to be in steady state on time-scales of the
George Royston-Bishop, Lerman, Lipenkov, Martin J. Siegert, Martyn Tranter, Moser, Paul D. Bates, Qin, Siegert, Victoria Lee   +9 more
core   +4 more sources

Stabilizing Inference in Dirichlet Regression via Ridge‐Penalized Model

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 1, February 2026.
ABSTRACT We propose a penalized Dirichlet regression framework for modeling compositional data, using a softmax link to ensure that the mean vector lies on the simplex and to avoid log‐ratio transformations or zero replacement. The model is formulated in a GLM‐like setting and incorporates an ℓ2$$ {\mathrm{\ell}}_2 $$ (ridge) penalty on the regression ...
Andrea Nigri
wiley   +1 more source

Carbon Cycle Succession Across a Permafrost Thaw Gradient in Northeastern Alberta as Revealed by δ13C in Dissolved Solids, Gases, and Particulates in Lakes

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 2, February 2026.
Abstract δ13C in particulate organic carbon (POC), dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), carbon dioxide (CO2(g)) and methane (CH4(g)), together with geochemical modeling, were applied to describe carbon cycle evolution in 40 boreal lakes situated across a permafrost thaw gradient in northeastern Alberta, Canada, where ...
J. J. Gibson, P. Eby, A. Jaggi
wiley   +1 more source

Influence of Landscape and Lake Characteristics on Long‐Term Water‐Level Responses in Shallow Lakes of the Sub‐Humid Boreal Plains, Canada

Water Resources Research, Volume 62, Issue 2, February 2026.
Range in hydrologic processes and dominant fluxes (scales and sources of groundwater connectivity, evapotranspiration component of the water balance, storage capacity), and function of shallow lake types common to the Boreal Plains, Canada, in relation to hydrologic response areas (HRAs) that are based on landscape parameters (surficial geology ...
S. Leader, N. Kettridge, C. Mendoza, D. Hannah, K. J. Devito   +4 more
wiley   +1 more source

Results of the Austrian-Ceylonese hydrobiological mission 1970 of the 1st Zoological Institute of the University of Vienna (Austria) and the Department of Zoology of the Vidyalankara University of Ceylon, Kelaniya. Pt. 2. Hydrochemical studies on mountain rivers in Ceylon [PDF]

, 1972
The morphology, climate, geology and geochemistry of Sri Lanka is briefly described. The separation into a wet zone (the south-west and greater part of the central highland) and a dry zone with two very dry parts in the south-east and in the north-west ...
Weninger, G.
core  

Hydrology and hydrochemistry of Alpine basins

Eos, Transactions American Geophysical Union, 1992
This year has seen the first strides toward a global understanding of the hydrology and hydrochemistry of alpine areas. Seasonally snow‐covered areas of the Earth's mountain ranges are important components of the global hydrologic cycle, even though they cover a small portion of the Earth's surface area.
Jeff Dozier, Mark Williams
openaire   +1 more source

Vertical movement of microplastics by roots of wheat plant (Triticum aestivum) and the plant response in sandy soil

Microplastics and Nanoplastics
Microplastics persist as a challenging pollutant in agroecosystems, posing potential risks to soil health and crop productivity. Root growth, elongation and expansion may significantly influence the vertical transport and infiltration of microplastics ...
Faith Chebet Tumwet, Anne Richter, Tomas Kleint, Traugott Scheytt   +3 more
doaj   +1 more source

Hydrochemistry river Ile and its tributaries

Chemical Bulletin of Kazakh National University, 2011
Set analysis of the data, including data forwarding and laboratory studies of authors, on the treatment components of the chemical composition and quality of water from the River Ile, its tributaries and their changes over time.
S. Romanova, E. Tursunov, J. Dostay, N. Kazangapova   +3 more
openaire   +2 more sources