Editing Isotope analysis (section)

=== Hydrology ===
In [[isotope hydrology]], stable isotopes of water (<sup>2</sup>H and <sup>18</sup>O) are used to estimate the source, age, and flow paths of water flowing through ecosystems. The main effects that change the stable isotope composition of water are [[evaporation]] and [[condensation]].<ref>{{cite book |last1=McGuire |first1=Kevin |last2=McDonnell |first2=Jeff |editor1-last=Michener |editor1-first=Robert |editor2-last=Lajtha |editor2-first=Kate |title=Stable isotopes in ecology and environmental science |publisher=Blackwell Pub |isbn=9781405126809 |edition=2nd |chapter=Stable isotope tracers in watershed hydrology|date=2007-10-08 }}</ref> Variability in water isotopes is used to study sources of water to streams and rivers, evaporation rates, groundwater recharge, and other hydrological processes.<ref>{{cite web |title=WaterIsotopes.org provides information, data, and resources for scientific applications involving spatial variation in the isotopes of hydrogen and oxygen |url=http://wateriso.utah.edu/waterisotopes/index.html |website=Waterisotopes.org |author=Gabriel Bowen |access-date=2019-03-17}}</ref><ref>{{cite web |title=Welcome |url=http://wateriso.utah.edu/spatial/ |website=Spatio-temporal Isotope Analytics Lab (Spatial) |author=Gabriel Bowen |access-date=2019-03-17}}</ref><ref>{{Cite journal|last1=Cardenas|first1=M. Bayani|last2=Rodolfo|first2=Raymond S.|last3=Lapus|first3=Mark R.|last4=Cabria|first4=Hillel B.|last5=Fullon|first5=Jose|last6=Gojunco|first6=Gordos R.|last7=Breecker|first7=Daniel O.|last8=Cantarero|first8=Danica M.|last9=Evaristo|first9=Jaivime|last10=Siringan|first10=Fernando P.|last11=Zhang|first11=Tongwei|date=2020|title=Submarine Groundwater and Vent Discharge in a Volcanic Area Associated With Coastal Acidification|url=https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019GL085730|journal=Geophysical Research Letters|language=en|volume=47|issue=1|pages=e2019GL085730|doi=10.1029/2019GL085730|bibcode=2020GeoRL..4785730C |hdl=1874/394092 |s2cid=212912472 |issn=1944-8007|hdl-access=free}}</ref>