Results 61 to 70 of about 1,896,507 (301)

Impacts of bridge piers on the initiation of ice cover – an experimental study

Journal of Hydrology and Hydromechanics, 2015
Ice jams in northern rivers during winter period significantly change the flow conditions due to the extra boundary of the flow. Moreover, with the presence of bridge piers in the channel, the flow conditions can be further complicated.
Wang Jun, Shi Fayi, Chen Pangpang, Wu Peng, Sui Jueyi   +4 more
doaj   +1 more source

Analysis of ice phenology of lakes on the Tibetan Plateau from MODIS data [PDF]

The Cryosphere, 2013
The Tibetan Plateau includes a large system of endorheic (closed basin) lakes. Lake ice phenology, i.e. the timing of freeze-up and break-up and the duration of the ice cover may provide valuable information about climate variations in this region.
J. Kropáček, F. Maussion, F. Chen, S. Hoerz, V. Hochschild   +4 more
doaj   +1 more source

Evaluation of Operation IceBridge quick-look snow depth estimates on sea ice [PDF]

, 2015
We evaluate Operation IceBridge (OIB) ‘quick-look’ (QL) snow depth on sea ice retrievals using in situ measurements taken over immobile first-year ice (FYI) and multi-year ice (MYI) during March of 2014. Good agreement was found over undeformed FYI (-4.5
Joshua King, Richter-Menge, Jacqueline, Howell, Stephen, Kurtz, Nathan, Haas, Christian, Stephen Howell, Justin F. Beckers, Nathan Kurtz, Peter Toose, King, Joshua, Beckers, Justin, Chris Derksen, Nick Rutter, Christian Haas, Jacqueline Richter‐Menge, Toose, Peter, Rutter, Nick, Derksen, Chris   +17 more
core   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

Fluctuations of ice in a lake due to the impact of the North Atlantic Oscillation (1960/61–2009/10) – a case study of Łebsko Lake

Oceanologia
The paper represents an attempt to understand the impacts produced by the North Atlantic Oscillation on the ice cover regime of the largest coastal lake in Poland situated in the northern part of the country.
Artur Młodzik, Roman Cieśliński, Izabela Chlost   +2 more
doaj   +1 more source

The Physical Oceanography of Ice-Covered Moons [PDF]

Annual Review of Marine Science
In the outer solar system, a growing number of giant planet satellites are now known to be abodes for global oceans hidden below an outer layer of ice. These planetary oceans are a natural laboratory for studying physical oceanographic processes in settings that challenge traditional assumptions made for Earth's oceans.
Soderlund, Krista, Rovira-Navarro, Marc, Le Bars, Michael, Schmidt, Britney, Gerkema, Theo   +4 more
openaire   +3 more sources

A comparison of glacier melt on debris-covered glaciers in the northern and southern Caucasus [PDF]

, 2011
The glacier coverage in the Caucasus Mountains underwent considerable changes during the last decades. In some regions, the observed reduction in glacier area is comparable to those in the European Alps and the extent of supra-glacial debris increased on
W. Hagg, A. Lambrecht, Popovnin, V., Lambrecht, A., A. Rezepkin, Hagg, Wilfried, Svanadze, D., C. Mayer, Rezepkin, A., N. Lomidze, D. Svanadze, Lomidze, N., V. Popovnin, Mayer, C.   +13 more
core   +2 more sources

Identification and characterization of a gene conferring stress resistance in Escherichia coli and cyanobacteria

FEBS Open Bio, EarlyView.
Functional screening identified PcSyn14890, a cyanobacteria‐specific protein that enhances growth and stress resistance in E. coli and Synechocystis PCC6803. Although we expected it to function as a molecular chaperone, it was unable to protect against thermal aggregation of GAPDH.
Akiyo Yamada, Takaaki Tanaka, Manaka Uehara, Keigo Nakano, Ken Morishima, Rintaro Inoue, Masaaki Sugiyama, Masafumi Yohda   +7 more
wiley   +1 more source

Role of Lake Morphometric and Environmental Drivers of Ice Cover Formation and Occurrence on Temperate Lakes: A Case Study from the Eastern Baltic Lakeland, Poland

Resources
The presence of ice cover on temperate lakes is a crucial factor in determining the functioning of these ecosystems. The isolation of water from atmospheric influences significantly alters physical, chemical, and biological processes, and the intensity ...
Mariusz Ptak, Teerachai Amnuaylojaroen, Wenfeng Huang, Li Wang, Mariusz Sojka   +4 more
doaj   +1 more source

Sub-debris melt rates on southern Inylchek Glacier, central Tian Shan [PDF]

, 2008
Melt rates of glacier surfaces are strongly influenced by the existence of a debris cover. Dependent on thickness and other physical parameters the debris layer can enhance or reduce ablation as compared to bare ice conditions.
Lambrecht, Astrid, Wilfried Hagg, Christoph Mayer, Helm, Achim, Astrid Lambrecht, Mayer, Christoph, Hagg, Wilfried, Achim Helm   +7 more
core   +1 more source