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Stable isotopes of oxygen and hydrogen in the Truckee River–Pyramid Lake surface‐water system. 2. A predictive model of δ 18 O and 18 2 H in Pyramid Lake
Author(s) -
Hostetler S. W.,
Benson L. V.
Publication year - 1994
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1994.39.2.0356
Subject(s) - environmental science , atmospheric sciences , pyramid (geometry) , stable isotope ratio , evaporation , evapotranspiration , hydrology (agriculture) , water balance , isotopes of oxygen , surface water , relative humidity , stratification (seeds) , geology , meteorology , physics , ecology , seed dormancy , geotechnical engineering , germination , geochemistry , botany , quantum mechanics , environmental engineering , dormancy , optics , biology
A physically based model of variations in δ 18 O and δ 2 H in Pyramid Lake is presented. For inputs, the model uses measurements of liquid water inflows and outflows and their associated isotopic compositions and a set of meteorological data (radiative fluxes, air temperature, relative humidity, and windspeed). The model simulates change of lake volume, thermal and isotopic stratification, evaporation, and the isotopic composition of evaporation. A validation of the model for 1987–1989 and 1991 indicates that it can reproduce measured intra‐ and interannual variations of δ 18 O and δ 2 H. Three applications of the model demonstrate its ability to simulate longer term responses of δ 18 O to change in the hydrologic balance and hydrologic characteristics (opening and closing) of the lake.