In the Field of Hydrology

Although and 1 have also been employed but the use of aU these isotopes is to be regarded as complements to the more conventional tools employed by hydrologists rather than being used in isolation. Recent review on this application has been reported by Fontes and Andrews (1994). 

---

Robert Horton, an influential pioneer in the field of hydrology, developed one of the first comprehensive representations of the hydrologic cycle in 1931. His original diagram. Fig. 6-4, illustrates the processes by which water moves between the Earth s hydrologic reservoirs. Hydrologic fluxes can be summed up in four... 

Materials that can be used in analytical laboratories working in the fields of nuclear technology and isotope hydrology. These include uranium ore reference materials and other substances relevant to nuclear fuel technology as well as stable isotope reference materials for mass spectrometric determination of isotope ratios in natural waters. 

It was encouraging to find that literature reviews for some disciplines exist, such as those in the fields of entomology, forestry, environmental science, hydrology, aquatic biology, and ornithology. In addition, the literature for more specific subjects within these disciplines and others has been reviewed, e.g., use of radioactive tags for studying animal behavior. 

The main distinctive property of the Black Sea is its inland location and high isolation from the World Ocean. Because of this, formation of the sea hydrological regime and water structure is governed by the outer factors the fluxes of heat, moisture and wind stress via the sea surface, as well as the river runoff. In this connection, the sea is characterized by a high level of its environmental variability. At the same time in different parts of the Black Sea, the influence of the outer factors is very unequal. Therefore, these factors exert a different impact on the formation of hydrological fields and vertical thermohaline structure in the sea. All this confirms the necessity for... 

Water samples contain dispersed soil particles and colloids. These can be removed by filtration, either in the field or in the laboratory. Some workers carefully filter every sample in the field others argue that the water emerges with particles that are part of the hydrological system under study and therefore their filtration can be postponed until arrival at the laboratory or skipped altogether. 

---