Use of chlorofluorocarbons in hydrology : a guidebook by International Atomic Energy Agency

By International Atomic Energy Agency

Show description

Read Online or Download Use of chlorofluorocarbons in hydrology : a guidebook PDF

Similar hydrology books

Aquatic Chemical Kinetics Reaction Rates of Processes in Natural Waters

Aquatic Chemistry An advent Emphasizing Chemical Equilibria in ordinary Waters moment variation Edited through Werner Stumm and James J. Morgan This moment variation of the popular vintage unites techniques, purposes, and strategies with the starting to be quantities of knowledge within the box. improved remedy is on the market on steady-state and dynamic types utilising mass-balance methods and kinetic details.

Hydrology and Water Resources of India

India is endowed with various topographical positive factors, resembling excessive mountains, huge plateaus, and extensive plains traversed via amazing rivers. Water is a crucial enter within the socio-economic improvement of a kingdom. In India, this dependence is much more obvious, as 70% of her inhabitants depends on agriculture.

Neural Networks for Hydrological Modeling

A brand new method of the fast-developing international of neural hydrological modelling, this publication is vital interpreting for lecturers and researchers within the fields of water sciences, civil engineering, hydrology and actual geography. every one bankruptcy has been written through a number of eminent specialists operating in a variety of fields of hydrological modelling.

Environmental Contaminants: Using natural archives to track sources and long-term trends of pollution

The human footprint at the worldwide surroundings now touches each nook of the area. This ebook explores the myriad ways in which environmental records can be utilized to check the distribution and long term trajectories of chemical contaminants. the amount first specializes in studies that study the integrity of the historical list, together with components regarding hydrology, post-depositional diffusion, and combining strategies.

Additional resources for Use of chlorofluorocarbons in hydrology : a guidebook

Example text

2001). Although included in the age analysis, by accounting for the small excesses, the adjusted ages were typically less than one year older than those based on average North American air and were within the uncertainties of the dating methods. , 1990), contact with air during sampling, introduction of young (and/or contaminated) water induced by pumping, and introduction of CFCs during well construction. In some cases, the sample tubing is a source of CFC contamination. A series of tests were conducted in the early 1990s to determine the contamination potential of various tubing materials.

2000). CFC-12 and CFC-113 concentrations in 32 EFFECTS AND PROCESSES THAT CAN MODIFY APPARENT CFC AGE unsaturated zone air in south-central Idaho were near or below North American air mixing ratios. , 2000). Most of the surface water samples were from canals that carry water from the Snake River, in south-central Idaho, which is diverted for crop irrigation, and these waters were near solubility equilibrium with CFC-12 and CFC-113. However, CFC-11 concentrations were up to twelvefold saturation in some of the surface waters, therefore, local recharge of contaminated river water used for crop irrigation is also a likely source of CFC-11 contamination in southcentral Idaho.

That case could be especially interesting in mountainous regions to derive recharge altitudes via the temperature dependency. 4. g. Herzberg and Mazor, 1979; Heaton and Vogel, 1981). The excess concentrations of various gases are often in accordance with air composition and this effect is, therefore, 47 COOK et al. called excess air (Heaton and Vogel, 1981). This is probably a result of a transient rise in the water table that does not fully displace the gas phase, or can be artificially introduced during well construction, development or purging.

Download PDF sample

Rated 4.17 of 5 – based on 42 votes