Hydrochemistry and Isotope Hydrology for Groundwater Sustainability of the Coastal Multilayered Aquifer System (Zhanjiang, China)

Table 2

Isotope data of groundwater in the multilayered aquifer system of Zhanjiang.

Sample number	Aquifer	Sampling time	^18O	^2H	δ^34S
			()	()	()
Q1	Unconfined aquifer	Mar 2010	−6.93	−43.7
Q2			−5.56	−38.4
Q3			−7.05	−45.8
Q4			−6.93	−46.5
Q5			−5.92	−39.8
Q6			−6.49	−41.5
Q7			−5.9	−38.8
Q8			−6.93	−45.4	6.52
Z2	Middle confined aquifer	Mar 2010	−6.42	−44
Z4			−7.4	−48.4
Z6			−6.7	−45.7
Z7			−6.94	−44.8
Z8			−6.91	−46.8
Z9			−6.58	−43.6
Z11			−7	−46.1
Z12			−6.71	−51.6
Z13			−7.42	−51.9	12.38
Z14			−7.05	−52.9	13.28
S2	Deep confined aquifer	Mar 2010	−7.16	−50.1
S3			−7.34	−49.6
S6			−7.45	−50.1
S7			−7.01	−46.5
S13			−7.09	−53.8
S14			−6.9	−54.6	17.26