Cl⁻ as a Chemical Fingerprint of Solute Transport in the Aquitard-Aquifer System of the North Jiangsu Coastal Plain, China

Table 1

Initial and boundary concentrations adopted for Cl⁻ concentrations at SY1 bore and SY2 bore.

Borehole	Depth range (m)	Time	Parameters	Upper BC (mg/L)	Lower BC (mg/L)	The confined aquifer BC (mg/L)	Initial concentration (mg/L)
SY1	182.0–2.0		(m^2/s)		Aquifer III; 182–162.2 m	Aquifer I; 86.5–62.6 m	Zone B and zone C	Aquifer I	Zone A
							162.2–86.5 m	86.5–62.6 m	62.6–19.9 m	19.9–2 m
SY1	162.0–19.9	15–10 ka BP	4.3 × 10^–10	60	250	60	250	60	250	/
	162.0–19.9	10 ka BP–AD 1,128		16,100	250	60	The simulation Cl^− concentration of 15 ka BP			/
	162.0–2.0	AD 1,128–present		100	250	60	The simulation Cl^− concentration of 10 ka BP			16,100
SY2	About 180.0–2.0				Aquifer III; about 180–160 m	Aquifer I; 54.2–34.8 m	About 160.0–54.2 m	54.2–34.8 m	34.8–18.9 m	18.9–2 m
SY2	About 180.0–18.9	15–10 ka BP	2.7 × 10^–10	60	250	60	250	60	250	/
	About 180.0–18.9	10 ka BP–AD 1,128		16,100	250	16,100	The simulation Cl^− concentration of 15 ka BP	16,100	16,100	/
	About 180.0–2.0	AD 1,128–present		100	250	16,100	The simulation Cl^− concentration of 10 ka BP			16,100

Note. “/” represents no data.