PMID- 37478941
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230919
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 899
DP  - 2023 Nov 15
TI  - Combining spectral analysis and geochemical tracers to investigate surface 
      water-groundwater interactions: A case study in an intensive agricultural setting 
      (southern Guatemala).
PG  - 165578
LID - S0048-9697(23)04201-8 [pii]
LID - 10.1016/j.scitotenv.2023.165578 [doi]
AB  - An increase in the frequency of severe hydrological events has highlighted the 
      importance of sustainable water management in intensive agricultural regions. In 
      a warming climate, improved understanding and stewardship of water resources are 
      needed to guarantee water supply, ensure food security, and build resilience 
      against extreme events. In this study, we evaluate a framework that combines 
      spectral analysis and geochemical tracers as a potential tool for (1) gaining 
      valuable insights into surface water (SW)-groundwater (GW) interactions, and (2) 
      providing guidance for improved water management in an intensive agricultural 
      basin in southern Guatemala. The framework proves to be useful in revealing 
      important water dynamics, exposing key feedback mechanisms for water availability 
      and quality. With the use of power density functions and hydrochemistry (T, pH, 
      EC, and major ions), two specific interaction regimes (influent and effluent) 
      were identified and delimited for the main watercourse. These segments are 
      estimated to interact at high rates with the shallow aquifer in the river channel 
      proximities and would lose influence towards the basin flanks. Furthermore, the 
      delta(2)H and delta(18)O values indicate that regional groundwater flow systems play an 
      essential role in the basin groundwater recharge. Lastly, we established three 
      influence zones that depict the spatial extent of the SW-GW interactions within 
      the basin. With these zones, we provide recommendations that will allow for 
      further investigation and application into better water management strategies 
      regulating groundwater development and land use activities within the 
      agricultural context of the area.
CI  - Copyright (c) 2023 The Authors. Published by Elsevier B.V. All rights reserved.
FAU - Paiz, Ricardo
AU  - Paiz R
AD  - CERIS, Instituto Superior Tecnico, Universidade de Lisboa, Av. Rovisco Pais 1, 
      1049-001 Lisboa, Portugal. Electronic address: rlmp23@gmail.com.
FAU - Low-Calle, Juan Francisco
AU  - Low-Calle JF
AD  - Instituto Privado de Investigacion sobre Cambio Climatico, Santa Lucia 
      Cotzumalguapa, Escuintla, Guatemala.
FAU - Molina-Estrada, Amy Guicela
AU  - Molina-Estrada AG
AD  - Instituto Privado de Investigacion sobre Cambio Climatico, Santa Lucia 
      Cotzumalguapa, Escuintla, Guatemala.
FAU - Gil-Villalba, Sergio
AU  - Gil-Villalba S
AD  - Instituto Privado de Investigacion sobre Cambio Climatico, Santa Lucia 
      Cotzumalguapa, Escuintla, Guatemala.
FAU - Condesso de Melo, Maria Teresa
AU  - Condesso de Melo MT
AD  - CERIS, Instituto Superior Tecnico, Universidade de Lisboa, Av. Rovisco Pais 1, 
      1049-001 Lisboa, Portugal.
LA  - eng
PT  - Journal Article
DEP - 20230720
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
OTO - NOTNLM
OT  - Alluvial fan
OT  - Environmental isotopes
OT  - Guatemala
OT  - Hydrochemistry
OT  - Spectral analysis
OT  - Water management
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/07/22 10:42
MHDA- 2023/07/22 10:43
CRDT- 2023/07/21 19:22
PHST- 2023/04/15 00:00 [received]
PHST- 2023/06/28 00:00 [revised]
PHST- 2023/07/14 00:00 [accepted]
PHST- 2023/07/22 10:43 [medline]
PHST- 2023/07/22 10:42 [pubmed]
PHST- 2023/07/21 19:22 [entrez]
AID - S0048-9697(23)04201-8 [pii]
AID - 10.1016/j.scitotenv.2023.165578 [doi]
PST - ppublish
SO  - Sci Total Environ. 2023 Nov 15;899:165578. doi: 10.1016/j.scitotenv.2023.165578. 
      Epub 2023 Jul 20.