Hurricanes Ingrid and Manuel (2013) and their impact on the salinity of the Meteoric Water Mass, Quintana Roo, Mexico

Coutino, Aaron; Stastna, Marek; Kovacs, Shawn E.; Reinhardt, Eduard G.

doi:10.1016/j.jhydrol.2017.04.022

Cited by 23 publications

(27 citation statements)

References 26 publications

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“…Slightly higher BW salinity in the wet season than in the dry season (Table ) and exceptionally elevated BW salinity measurements following frequent rainfalls in late October (Figure a) support the idea that salinity in the BW increases after rain‐induced hydrological changes. This effect is a result of greater shear at the deeper halocline between the dynamic meteoric lens (with increased flow) and the more stagnant saline groundwater (Coutino et al, ; Kovacs et al, ). However, the fact that the BW‐SG halocline (H2) was always stable during the sampling period (Figure ; Ri < 0.25 for H2 is outside of parameter space) suggests mixing between the BW and SG primarily occurs upstream of the sampling station under a different mixing regime within caves or perhaps at cenotes containing saline groundwater (Coutino et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…The analysis was performed following the methods described by Grinsted et al (). Cross wavelet transforms of two time series identify common power in time‐frequency space, allowing for a mechanistic link between processes (Grinsted et al, ) and have been useful for identifying hydrologic mixing mechanisms and their temporal extent in unconfined aquifers within the Yucatan coastal platform (Coutino et al, ; Kovacs et al, ). Coherence between continuous wavelet transforms are more informative than standard lagged correlation analyses because they account for dynamic variations in time‐frequency space.…”

Section: Methodsmentioning

confidence: 99%

“…For example, oxygen enters the aquifer through point recharge of meteoric water (Ford & Williams, ), while the tidal‐pumping of coastal seawater (Beddows et al, ; Martin et al, ) introduces dissolved oxygen and sulfate that are respectively available for aerobic and anaerobic microbes (Socki et al, ). Seasonal precipitation patterns and extreme meteorological events (e.g., hurricanes) can alter the physical distribution and mixing of material within the caves (Coutino et al, ; Kovacs et al, ) with corresponding effects on the cave ecology and transformation of material expelled into the coastal ocean.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hydrologic Controls of Methane Dynamics in Karst Subterranean Estuaries

Brankovits

Pohlman

Ganju

et al. 2018

Global Biogeochemical Cycles

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Karst subterranean estuaries (KSEs) extend into carbonate platforms along 12% of all coastlines. A recent study has shown that microbial methane (CH4) consumption is an important component of the carbon cycle and food web dynamics within flooded caves that permeate KSEs. In this study, we obtained high‐resolution (~2.5‐day) temporal records of dissolved methane concentrations and its stable isotopic content (δ13C) to evaluate how regional meteorology and hydrology control methane dynamics in KSEs. Our records show that less methane was present in the anoxic fresh water during the wet season (4,361 ± 89 nM) than during the dry season (5,949 ± 132 nM), suggesting that the wet season hydrologic regime enhances mixing of methane and other constituents into the underlying brackish water. The δ13C of the methane (−38.1 ± 1.7‰) in the brackish water was consistently more 13C‐enriched than fresh water methane (−65.4 ± 0.4‰), implying persistent methane oxidation in the cave. Using a hydrologically based mass balance model, we calculate that methane consumption in the KSE was 21–28 mg CH4·m−2·year−1 during the 6‐month dry period, which equates to ~1.4 t of methane consumed within the 102‐ to 138‐km2 catchment basin for the cave. Unless wet season methane consumption is much greater, the magnitude of methane oxidized within KSEs is not likely to affect the global methane budget. However, our estimates constrain the contribution of a critical resource for this widely distributed subterranean ecosystem.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrologic Controls of Methane Dynamics in Karst Subterranean Estuaries

Brankovits

Pohlman

Ganju

et al. 2018

Global Biogeochemical Cycles

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“…Besides, Coutino et al (2017) and Kovacs et al (2017) found a positive correlation between extreme rainfall events (caused by hurricanes), water salinity and groundwater level measured in sinkholes in a karstified environment. Results suggest that sea-level position has a linear correlation with aquifer head variation, while storm surges, wind conditions, droughts and rainy periods are other important stochastic factors that control these phenomena.…”

Section: Introductionmentioning

confidence: 86%

“…In the Yucatan Peninsula, México, similar studies have been carried out using fractures, sinkholes, and/or offshore submarine springs for monitoring (Vera et al 2012;Parra et al 2016;Coutino et al 2017;Kovacs et al 2017Kovacs et al , 2018Young et al 2018). However, these methodologies are valid for studies on the turbulent mixing within a cave-related domain (e.g., free water-column mixing) in the absence of porous or fractured/karstic-rock matrix (Coutino et al 2017). In contrast, studies on the N-NW Yucatán peninsula aquifer show evidence of confinement in the coastal zone (Perry et al 1989), suggesting that the aquifer behaviour here may differ from those presented in the previous studies cited in the preceding.…”

Section: Introductionmentioning

confidence: 99%

Empirical relationships of groundwater head–salinity response to variations of sea level and vertical recharge in coastal confined karst aquifers

et al. 2020

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Coastal aquifers are characterized by a mixing zone with freshwater-saltwater interactions, which have a strong relationship with hydrological forcings such as astronomical and storm tides, aquifer recharge and pumping effects. These forcings govern the aquifer hydraulic head, the spatial distribution of groundwater salinity and the saline interface position. This work is an empirical evaluation through time-series analysis between aquifer head and groundwater salinity associated with the sea-level dynamics and the aquifer recharge. Groundwater pressure, temperature and salinity were measured in a confined aquifer in the northwest coast of Yucatan (México) during May 2017-May 2018, along with precipitation. Cross-correlation and linear Pearson correlation (r) analyses were performed with the data time series, separating astronomical and meteorological tides and vertical recharge effects. The results show that the astronomical and meteorological tides are directly correlated with the aquifer head response (0.71 < r < 0.99). Salinity has a direct and strong relationship with the astronomical tide (0.76 < r < 0.98), while the meteorological tide does not (r < 0.5). The vertical recharge showed a moderate correlation with the aquifer head (0.5 < r < 0.7) and a nonsignificant correlation with the groundwater salinity (r < 0.5). In this study, the sea level (r > 0.7) is a more important forcing than the vertical recharge (with 0.5 < r < 0.7). Empirical relationships through time-series analysis and the separation of individual hydrological forcings in the analysis are powerful tools to study, define and validate the conceptual model of the aquifer.

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Response and resilience of karst subterranean estuary communities to precipitation impacts

Calderón Gutiérrez,

Iliffe,

Borda

et al. 2023

Ecology and Evolution

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The impact of meteorological phenomena on ecosystem communities of karst subterranean estuaries (KSEs) remains unknown. KSEs are characterized by vertically stratified groundwater separated by a halocline and host endemic aquatic cave‐adapted fauna (stygobionts). In October 2015, 8 days of heavy precipitation caused the first recorded mortality event in the KSE. This event was marked by a halocline shift 5 m deeper. The present study aimed to provide insights into resilience of KSEs faunal communities to temporal shifts in temperature and precipitation. Cave water temperature decreased on average 0.0068°C per mm of accumulated precipitation over 4 days, which can add up to, and surpass, the interannual temperature variation in cases of heavy precipitations. Biological surveys (2012–2021) conducted within cave systems El Aerolito and La Quebrada, in Cozumel, indicated that change in community structure was not detected and stygobionts were resilient; however, marine species inhabiting the caves were impacted. Overall, the faunal community at KSEs remains resilient within short‐term meteorological phenomena despite shifts of non‐stygobionts.

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Hurricanes Ingrid and Manuel (2013) and their impact on the salinity of the Meteoric Water Mass, Quintana Roo, Mexico

Cited by 23 publications

References 26 publications

Hydrologic Controls of Methane Dynamics in Karst Subterranean Estuaries

Hydrologic Controls of Methane Dynamics in Karst Subterranean Estuaries

Empirical relationships of groundwater head–salinity response to variations of sea level and vertical recharge in coastal confined karst aquifers

Response and resilience of karst subterranean estuary communities to precipitation impacts

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