Tracing Groundwater‐Surface Water Interactions in a Volcanic Maar Lake Using Stable Isotopes and 222Rn DOI Creative Commons
Germain Esquivel‐Hernández,

Emanuel Montealegre‐Viales,

Rolando Sánchez‐Gutiérrez

et al.

Journal of Geophysical Research Biogeosciences, Journal Year: 2024, Volume and Issue: 129(12)

Published: Dec. 1, 2024

Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These important controlling lake residence time, aqueous biogeochemistry, and availability for downstream communities ecosystems. To better comprehend the complexity of spatio‐temporal variations aquifer‐lake domain tropical volcanic regions, a multi‐tracer approach including inorganic carbon stable isotopes (δ 2 H, δ 18 O, 13 C DIC ), hydrochemistry, 222 Rn was applied Lake Hule, northern Costa Rica. Seasonal isotope mass balance calculations using lake, stream, precipitation, groundwater compositions were supplemented with local hydrometeorological information. Evaporation inflow ratios ( E/I ) revealed small variability between dry (December–April) wet seasons (May–November), relatively low evaporation losses, 2.9 ± 1.0 % 3.2 1.8 %, respectively. Bayesian end‐member analysis indicated that annual inputs from groundwater, runoff represented 61.3 8.1%, 24.4 8.4, 14.3 5.9% total inflow, Temporal confirmed key role carbonate buffering plays this greater CO degassing sources season. This tracer‐aided assessment maar Rica provides evidence previously unknown illustrates application isotopic tools estimating balances seasonal discharge into natural lakes across front Central America.

Language: Английский

Attributes of karst lakes in sustaining net autotrophy and carbon sink effects DOI

Yongqiang Han,

Haibo He, Zaihua Liu

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: unknown, P. 132404 - 132404

Published: Nov. 1, 2024

Language: Английский

Citations

0
Tracing Groundwater‐Surface Water Interactions in a Volcanic Maar Lake Using Stable Isotopes and 222Rn DOI Creative Commons
Germain Esquivel‐Hernández,

Emanuel Montealegre‐Viales,

Rolando Sánchez‐Gutiérrez

et al.

Journal of Geophysical Research Biogeosciences, Journal Year: 2024, Volume and Issue: 129(12)

Published: Dec. 1, 2024

Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These important controlling lake residence time, aqueous biogeochemistry, and availability for downstream communities ecosystems. To better comprehend the complexity of spatio‐temporal variations aquifer‐lake domain tropical volcanic regions, a multi‐tracer approach including inorganic carbon stable isotopes (δ 2 H, δ 18 O, 13 C DIC ), hydrochemistry, 222 Rn was applied Lake Hule, northern Costa Rica. Seasonal isotope mass balance calculations using lake, stream, precipitation, groundwater compositions were supplemented with local hydrometeorological information. Evaporation inflow ratios ( E/I ) revealed small variability between dry (December–April) wet seasons (May–November), relatively low evaporation losses, 2.9 ± 1.0 % 3.2 1.8 %, respectively. Bayesian end‐member analysis indicated that annual inputs from groundwater, runoff represented 61.3 8.1%, 24.4 8.4, 14.3 5.9% total inflow, Temporal confirmed key role carbonate buffering plays this greater CO degassing sources season. This tracer‐aided assessment maar Rica provides evidence previously unknown illustrates application isotopic tools estimating balances seasonal discharge into natural lakes across front Central America.

Language: Английский

Citations

0