Best free xxx dateing for women in the quincy il area - Dating cave drip water by tritium

Speleothems are increasingly used as an archive of past climate, but some of the proxy signals encoded in these deposits reflect hydrological characteristics of the karst aquifer (and not necessarily climate variability).

A central aspect in karst hydrology is the time required for the rainwater to reach the point of discharge in a cave, e.g. One promising approach in determining this residence time is drip-water dating by tritium (H).

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The approach was tested in three adjacent caves in northwestern Germany which were monitored for about two years.

All of the studied drip sites yielded drip water ages between 2 and 4 years with uncertainties on the order of 1 year.

These results were confirmed at several drip sites by oxygen isotope data which show rather constant values with insignificant intra-annual variability.

Understanding of hydrological processes in caves is important to help us interpret paleoclimate records from speleothems.

In this study, we integrated hydrogeological and hydrogeochemical properties to characterize the hydraulic behavior of karst waters in the Heshang Cave, Central China.

Using geological and topographical analyses, we identified regional watershed boundaries and hydrogeological connections that were controlled by anticlinal geometry and faults.Water samples were collected from the Heshang Cave and potential recharge sites.Geochemical data of ) ratio ranges from 0.97 to 1.1, indicating that recharge was mainly from rainfall infiltration through the overlying Cambrian dolomite stratum.(2014), Freshwater lenses as archive of climate, groundwater recharge, and hydrochemical evolution: Insights from depth-specific water isotope analysis and age determination on the island of Langeoog, Germany. Conchetto (2014), A multi-tracer study of groundwater origin and transit-time in the aquifers of the Venice region (Italy). Nakamura (2008), First evidence for high-temperature off-axis venting of deep crustal/mantle heat: The Nibelungen hydrothermal field, southern Mid-Atlantic Ridge.

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