نتایج جستجو برای: karstic water

تعداد نتایج: 551116  

Journal: :جغرافیا و توسعه ناحیه ای 0

extended abstract 1. introduction karst classification is carried out in order to better investigate karsts. it plays a fundamental role in distinguishing and recognizing them. today, the implementation of development projects without the appreciation of karst classification and recognition seems a difficult task. field studies, topographic maps, satellite images, aerial photographs and geologi...

2017
Philippe Machetel David A. Yuen

We assess the errors produced by considering temperature as a conservative tracer in fluviokarst studies. Heat transfer that occurs between karstic Conduit System (CS) and Porous Fractured Matrix (PFM) is the reason why one should be careful in making this assumption without caution. We consider the karstic aquifer as an Open Thermodynamic System (OTS), which boundaries are permeable to thermal...

2013
Inés C Wilhartitz Alexander K T Kirschner Corina P D Brussaard Ulrike R Fischer Claudia Wieltschnig Hermann Stadler Andreas H Farnleitner

Seasonal dynamics of naturally occurring prokaryotes, viruses, and heterotrophic nanoflagellates in two hydro-geologically contrasting alpine karst springs were monitored over three annual cycles. To our knowledge, this study is the first to shed light on the occurrence and possible interrelationships between these three groups in karstic groundwater. Hydrological and microbiological standard i...

Journal: :Environmental science and pollution research international 2016
L E Zuffianò A Basso D Casarano V Dragone P P Limoni A Romanazzi F Santaloia M Polemio

The Mar Piccolo basin is an internal sea basin located along the Ionian coast (Southern Italy), and it is surrounded primarily by fractured carbonate karstic environment. Because of the karstic features, the main continental water inflow is from groundwater discharge. The Mar Piccolo basin represents a peculiar and sensitive environment and a social emergency because of sea water and sediment p...

2015
Tivadar M. Tóth

One of the current objectives of karst research is to understand the spatial dynamics of karstic processes that increase or decrease pore volume. Although we can construct 3D numerical models, it is a complex, multi-step process. These modelling approaches combine a dissolution algorithm, a flow and/or transport model and an algorithm to reconstruct the spatial geometry of fracture networks. Th...

Journal: :Zootaxa 2015
Santi Watiroyram Anton Brancelj La-Orsri Sanoamuang

Elaphoidella thailandensis sp. nov. and E. jaesornensis sp. nov., collected during an investigation of cave-dwelling copepod fauna in the northern part of Thailand, are described and figured herein. The new species were collected from pools filled by percolating water from the unsaturated zone of a karstic aquifer in Phitsanulok and Lampang Provinces, respectively. Elaphoidella thailandensis, f...

2008
Barbara Thulin

This report concerns a study which was conducted for SKB. The conclusions and viewpoints presented in the report are those of the authors and do not necessarily coincide with those of the client. Abstract This report presents the current state of ecological knowledge and applied research relating to groundwater. A conceptual picture is given of groundwater fauna occurrence in regard to Swedish ...

Journal: :Atmosphere 2021

Seasonal variations of the radon and radium activity concentrations in karstic water sources originating formations were investigated as part a premiere systematic survey conducted Romania. A database including total 228 drinking samples collected from 30 distinct adjacent to rural communities was compiled. The for all seasons, assessed based on solid scintillation, ranged 2.1 19.7 Bq/L 0.6 3.0...

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