Results 51 to 60 of about 352,609 (153)

Sedimentation of Reservoirs [PDF]

, 2013
S waves are seismic body waves meaning they travel through the Earth's interior. Their velocity is slower thant that of P waves, and they are normally the second major phase to be observed on a seismorgram, and are therefore also referred to as secondary waves.
openaire   +1 more source

Hydrothermal sediments record changes in deep water oxygen content in the SE Pacific

, 2010
The distribution of redox?sensitive metals in sediments is potentially a proxy for past ocean ventilation and productivity, but deconvolving these two major controls has proved difficult to date.
John Thomson, Heiko Pälike, Mills, R.A., Pälike, H., Rachel A. Mills, Taylor, S.L., Sarah L. Taylor, Thomson, John   +7 more
core   +1 more source

Tool4S: A GUI-based python software tool for seismic station site selection data processing and analysis

SoftwareX
Data quality is the foundation of further research. It’s essential to find a seismic station whose data could be collected without being significantly affected by surrounding noise sources.
Cheng Ding, Chengli Jiao, Shuang Zheng, Zhiyuan Zhao, Xiangdong Feng   +4 more
doaj   +1 more source

Bacterial GDGTs in Holocene sediments and catchment soils of a high Alpine lake: application of the MBT/CBT-paleothermometer [PDF]

, 2011
A novel proxy for continental mean annual air temperature (MAAT) and soil pH, the MBT/CBT-paleothermometer, is based on the temperature (T) and pH-dependent distribution of specific bacterial membrane lipids (branched glycerol dialkyl glycerol ...
Lehmann, M. F., Hopmans, E.C., Stadnitskaia, A., Hopmans, Ellen C., J. S. Sinninghe Damsté, Niemann, Helge, Anselmetti, Flavio S., Sinninghe-Damste, J.S., Stadtnitskaia, A., A. Gilli, Wirth, Stefanie B., Niemann, H., F. S. Anselmetti, M. F. Lehmann, A. Stadnitskaia, E. C. Hopmans, Sinninghe Damsté, J.S.S., Sinninghe Damsté, Jaap S., Lehmann, M.F., Schouten, S., H. Niemann, Sinninghe Damsté, J.S., Stadnitskaia, Alina, S. B. Wirth, Wirth, S.B., Hoppmans, E. C., Schouten, Stefan, Gilli, A., Wirth, S. B., Sinninghe Damsté, J. S., Anselmetti, F.S., Anselmetti, F. S., Lehmann, Moritz F., S. Schouten, Gilli, Adrian; id_orcid, Niemann, H. (author), Wirth, S.B. (author), Schouten, S. (author), Sinninghe Damsté, J.S. (author), Gilli, A. (author), Hopmans, E.C. (author), Lehmann, M.F. (author), Stadnitskaia, A. (author), Anselmetti, F.S. (author)   +43 more
core   +3 more sources

Seagrass (Zostera marina) promotes nitrification potential and selects specific ammonia oxidizers in coastal sediments

, 2021
Purpose Seagrasses accelerate sedimentation, release oxygen and organic matter through their roots, and compete with ammonia oxidizers for ammonia/ammonium in surface sediments and overlying water, all of which can influence benthic aerobic nitrification.
Zou, Songbao, Lin, Xianbiao, Zheng, Pengfei, Gong, Jun, Zhang, Xiaoli, Sun, Feifei, Feifei Sun, Xiaoli Zhang, Jun Gong, Songbao Zou, Xianbiao Lin, Pengfei Zheng   +11 more
core   +1 more source

Speciation of Sedimentary Phosphorus in an Urban Wetland: The Case of El Oulfa Pound. Casablanca, Morocco [PDF]

E3S Web of Conferences
Eutrophication remains a major concern for the quality of surface waters worldwide. This phenomenon significantly restricts water usage. The El Oulfa pond, located in Casablanca, is experiencing advanced eutrophication primarily caused by domestic ...
Nachchach Badr, Jounaid Halima, Taoufik Mohammed, Chakri Nihad, Elamrani Btissam, Dialo Wandé   +5 more
doaj   +1 more source

Cadmium transport in sediments by tubificid bioturbation: An assessment of model complexity [PDF]

, 2006
Biogeochemistry of metals in aquatic sediments is strongly influenced by bioturbation. To determine the effects of biological transport on cadmium distribution in freshwater sediments, a bioturbation model is explored that describes the conveyor-belt ...
Boudou, A., Sauvage, S., Delmotte, S., Gerino, M., Gérino, Magali, Sauvage, Sabine, Boudou, Alain, Ciutat, Aurélie, Ciutat, A., Meysman, Filip J.R., Meysman, F.J.R., Delmotte, Sébastien   +11 more
core   +1 more source

Apparent OSL ages of modern deposits from Fåbergstølsdalen, Norway : implications for sampling glacial sediments [PDF]

, 2013
This work was funded by NERC, grant number F008589/1The application of optically stimulated luminescence (OSL) dating within glacial settings can be limited where sediments have not had their OSL signal fully reset by sunlight exposure.
Robinson, Ruth Alison Joyce, A. A. FINCH, King, Georgina, G. E. KING, Finch, Adrian Anthony, R. A. J. ROBINSON, Finch, Adrian Anthony; id_orcid   +6 more
core   +1 more source

Assessing the effects of model parameter assumptions on surface-wave inversion resultsKey points

Earthquake Science
Surface-wave inversion is a powerful tool for revealing the Earth’s internal structure. However, aside from shear-wave velocity (vS), other parameters can influence the inversion outcomes, yet these have not been systematically discussed.
Xuezhen Zhang, Xiaodong Song
doaj   +1 more source

Type Specimens of the Species of the Genus Papillicalymene (Arthropoda, Trilobita) from Ukraine Described by Leonid Konstantynenko

Zoodiversity
The article presents diagnoses and information on the type series of two trilobite species of the genus Papillicalymene Shirley, 1936: P. dnistroviana Konstantynenko, 2006 and P. sokoliana Konstantynenko, 2006 from the Ludlow (Upper Silurian) of Podillia
V. Dernov
doaj   +1 more source