نتایج جستجو برای: water and earth

تعداد نتایج: 16943378  

ژورنال: علوم آب و خاک 2013
سید محمدعلی زمردیان, , پویان باقری , ,

Hydraulic conductivity is an important parameter in the design of geotechnical structures such as earth dam, floor construction, retaining walls and environmental structures. In unsaturated soils, hydraulic conductivity is a function of moisture content and soil water suction i.e. soil moisture characteristic curve. In this study, the values of unsaturated hydraulic conductivity in two soil typ...

2014
Valentina Magni Pierre Bouilhol Jeroen van Hunen

We investigate the dehydration processes in subduction zones and their implications for the water cycle throughout Earth's history. We use a numerical tool that combines thermo-mechanical models with a thermodynamic database to examine slab dehydration for present-day and early Earth settings and its consequences for the deep water recycling. We investigate the reactions responsible for releasi...

Journal: :Computers & Geosciences 2010
Steffen Gebhardt Thilo Wehrmann Verena Klinger Ingo Schettler Juliane Huth Claudia Künzer Stefan W. Dech

The German–Vietnamese water-related information system for the Mekong Delta (WISDOM) project supports business processes in Integrated Water Resources Management in Vietnam. Multiple disciplines bring together earth and ground based observation themes, such as environmental monitoring, water management, demographics, economy, information technology, and infrastructural

2003
M. G. Tuchscherer C. Koeberl

YAXCOPOIL-1 BOREHOLE, CHICXULUB IMPACT STRUCTURE, YUCATÁN PENINSULA, MEXICO. M.G. Tuchscherer, ([email protected]), W.U. Reimold, R.L. Gibson, and C. Koeberl, Impact Cratering Research Group (I.C.R.G.), School of Geosciences, University of the Witwatersrand, Private Bag 3, P.O. Wits 2050, Johannesburg, South Africa, Institute of Geochemistry, University of Vienna, Althanstrasse 14, ...

Journal: :پژوهش های جغرافیای طبیعی 0
حسین عساکره دانشیار اقلیم شناسی دانشگاه زنجان، زنجان، ایران مهدی دوستکامیان دانشجوی دکتری تغییرات آب وهوایی دانشگاه زنجان، زنجان، ایران هوشنگ قائمی استاد هواشناسی وابسته به پژوهشکدة هواشناسی ایران، ایران

extended abstractintroductionwater vapor is considered to be one of more significant atmospheric constituents as it contributes in precipitation and is also a critical element of the climate system. this climate element extended from earth surface to upper level of troposphere that potentially precipitable. accordingly it called perceptible water. therefore the total atmospheric water vapor con...

2012
John C. Priscu Kevin P. Hand

F or most of Earth’s history, life was microscopic and, even today, microorganisms dominate the planet. Hence, we believe that, if life exists beyond Earth, it likely started as microorganisms and may remain at this stage. Much of contemporary astrobiological research focuses on the metabolic potential of microorganisms and their ability to inhabit extreme environments. The search for life beyo...

G.H. Heravi, H. Garshasbi, J. Karimi Diba, M.H. Jahanbakhshian, S.K. Asghari,

  ABSTRACT   Background : Natural uranium exists in earth crust and seawater. The concentration of uranium might increase by human manipulation or geological changes. The aim of this study was to verify susceptibility of laser flourimetry method to determine the uranium concentration in Caspian Sea and Persian Gulf water.   Materials and Methods : Laser flourimetric method was used to determine...

Journal: :Remote Sensing 2014
Wim G. M. Bastiaanssen Poolad Karimi Lisa-Maria Rebelo Zheng Duan Gabriel B. Senay Lal Muthuwatte Vladimir Smakhtin

The increasing competition for water resources requires a better understanding of flows, fluxes, stocks, and the services and benefits related to water consumption. This paper explains how public domain Earth Observation data based on Moderate Resolution Imaging Spectroradiometer (MODIS), Second Generation Meteosat (MSG), Tropical Rainfall Measurement Mission (TRMM) and various altimeter measur...

Water is a unique natural resource among all sources available on earth. It plays an important role in economic development and the general well-being of the country. This study aimed at using the application of water quality index in evaluating the ground water quality innorth-east area of Jaipur in pre and post monsoon for public usage. Total eleven physico–chemical characteristics; total dis...

2017
Javier Martín-Torres María-Paz Zorzano

S ince publication of the first evidence of liquid water on present-day Mars (Martı́n-Torres et al., 2015) according to Curiosity data, scientists have wondered how best to further investigate the presence of brines. Initial evidence was acquired at Gale Crater, near the equator of the planet, a location where this presence of liquid water was highly unexpected. This evidence was later corrobora...

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