查看文章

The stable isotopic contents of precipitation and deuterium excess (d-excess) data justified the hypothesis that two distinct vapor sources are responsible for precipitation at Tarbela. Summer vapor source from Bay of Bengal/Arabian Sea is characterized by low d-excess (≤ 10) and enriched isotopic values are due to high evaporation rate at source. δ¹⁸O and δ²H approaches 1 and 14‰ respectively in summer with d-excess 6‰.Winter vapor source is from Mediterranean Sea. Depleted isotopic values due to low evaporation rate at source are characterized by high d-excess values (≥ 16‰). δ¹⁸O and δ²H approaches − 9.8 and − 62‰ respectively with d-excess 17‰.