Reply on RC1 DOI Creative Commons
Landon J. S. Halloran

Published: Aug. 27, 2024

Abstract. Rock glaciers play a vital role in the hydrological functioning of many alpine catchments. Here, we investigate seasonal and daily freeze-thaw cycles previously undocumented Canfinal rock glacier (RG) located Val d'Ursé catchment (Bernina Range, Switzerland) RG's influence on dynamics hydrogeological system. We combine digital image correlation techniques, geochemical isotopic analyses, time-series analysis, monitoring to understand An acceleration RG creep since 1990 has occurred, with most active regions exhibiting horizontal velocities ~1 m/yr. Distinct signatures springs influenced by discharge reflect contrasting temporally-variable groundwater mixing ratios. A novel application frequency-domain analysis air temperature spring electrical conductivity enables quantitative understanding thaw subsurface flow dynamics. gradual decrease time-lag between maximum EC minimum, caused dilution from ice melt, is observed over snow-free period, implying progressively shorter residence times. Through our multi-method approach, develop conceptual models for RG-influenced systems time-scales.

Language: Английский

Comment on egusphere-2024-927 DOI Creative Commons

Cyprien Louis,

Landon J. S. Halloran, Clément Roques

et al.

Published: June 13, 2024

Abstract. Rock glaciers play a vital role in the hydrological functioning of many alpine catchments. Here, we investigate seasonal and daily freeze-thaw cycles previously undocumented Canfinal rock glacier (RG) located Val d'Ursé catchment (Bernina Range, Switzerland) RG's influence on dynamics hydrogeological system. We combine digital image correlation techniques, geochemical isotopic analyses, time-series analysis, monitoring to understand An acceleration RG creep since 1990 has occurred, with most active regions exhibiting horizontal velocities ~1 m/yr. Distinct signatures springs influenced by discharge reflect contrasting temporally-variable groundwater mixing ratios. A novel application frequency-domain analysis air temperature spring electrical conductivity enables quantitative understanding thaw subsurface flow dynamics. gradual decrease time-lag between maximum EC minimum, caused dilution from ice melt, is observed over snow-free period, implying progressively shorter residence times. Through our multi-method approach, develop conceptual models for RG-influenced systems time-scales.

Language: Английский

Citations

0
Comment on egusphere-2024-927 DOI Creative Commons

Cyprien Louis,

Landon J. S. Halloran, Clément Roques

et al.

Published: June 14, 2024

Abstract. Rock glaciers play a vital role in the hydrological functioning of many alpine catchments. Here, we investigate seasonal and daily freeze-thaw cycles previously undocumented Canfinal rock glacier (RG) located Val d'Ursé catchment (Bernina Range, Switzerland) RG's influence on dynamics hydrogeological system. We combine digital image correlation techniques, geochemical isotopic analyses, time-series analysis, monitoring to understand An acceleration RG creep since 1990 has occurred, with most active regions exhibiting horizontal velocities ~1 m/yr. Distinct signatures springs influenced by discharge reflect contrasting temporally-variable groundwater mixing ratios. A novel application frequency-domain analysis air temperature spring electrical conductivity enables quantitative understanding thaw subsurface flow dynamics. gradual decrease time-lag between maximum EC minimum, caused dilution from ice melt, is observed over snow-free period, implying progressively shorter residence times. Through our multi-method approach, develop conceptual models for RG-influenced systems time-scales.

Language: Английский

Citations

0
Reply on RC2 DOI Creative Commons

Hoda Moradi

Published: June 25, 2024

Abstract. In the Central Eastern Alps, an increasing number of high-altitude streams display high concentrations toxic solutes such as Al, F-, Mn, and Ni that may strongly exceed drinking water limits. Previous studies have shown these elements are mobilized from rock glaciers occurring at origin streams. This is caused by weathering pyrite producing sulfuric acid therefore promoting leaching crystalline host rocks. After mobilization, temporally stored enriched in glacier ice. Today, climate-change-induced accelerated melting thus leads to a quick focused export summer when ice melt rates high. The temporal storage opens up opportunity use strong chemical signal track dynamics identify governing processes controlling melt. To test this assess consequences on streamwater quality, here we present two-year dataset (2021, 2022) monitoring high-alpine stream originating intact located Switzerland. includes monthly sampling discharge measurements outlet, well continuous tracking geogenic fluxes using pressure conductivity probe. Our revealed annual with seasonal variation, whereby were highest during warm months. 2021, several tons each, which remarkable given area covers only about 40’000 m2. Interestingly, 2022 30 % lower despite record-high temperatures. A similar difference was observed for recorded two years. suggests both controlled amount snowmelt precipitation infiltrating into system. dry weather low likely lead compared snow height above average. Nevertheless, years degradation significantly contributed downhill stream. Based aspects, conceptual models accumulation their driven mobilization degradation. Finally, argue solute exported promising future research direction obtaining more reliable estimates glaciers.

Language: Английский

Citations

0
Reply on RC2 DOI Creative Commons
Landon J. S. Halloran

Published: Aug. 27, 2024

Abstract. Rock glaciers play a vital role in the hydrological functioning of many alpine catchments. Here, we investigate seasonal and daily freeze-thaw cycles previously undocumented Canfinal rock glacier (RG) located Val d'Ursé catchment (Bernina Range, Switzerland) RG's influence on dynamics hydrogeological system. We combine digital image correlation techniques, geochemical isotopic analyses, time-series analysis, monitoring to understand An acceleration RG creep since 1990 has occurred, with most active regions exhibiting horizontal velocities ~1 m/yr. Distinct signatures springs influenced by discharge reflect contrasting temporally-variable groundwater mixing ratios. A novel application frequency-domain analysis air temperature spring electrical conductivity enables quantitative understanding thaw subsurface flow dynamics. gradual decrease time-lag between maximum EC minimum, caused dilution from ice melt, is observed over snow-free period, implying progressively shorter residence times. Through our multi-method approach, develop conceptual models for RG-influenced systems time-scales.

Language: Английский

Citations

0
Reply on RC1 DOI Creative Commons
Landon J. S. Halloran

Published: Aug. 27, 2024

Abstract. Rock glaciers play a vital role in the hydrological functioning of many alpine catchments. Here, we investigate seasonal and daily freeze-thaw cycles previously undocumented Canfinal rock glacier (RG) located Val d'Ursé catchment (Bernina Range, Switzerland) RG's influence on dynamics hydrogeological system. We combine digital image correlation techniques, geochemical isotopic analyses, time-series analysis, monitoring to understand An acceleration RG creep since 1990 has occurred, with most active regions exhibiting horizontal velocities ~1 m/yr. Distinct signatures springs influenced by discharge reflect contrasting temporally-variable groundwater mixing ratios. A novel application frequency-domain analysis air temperature spring electrical conductivity enables quantitative understanding thaw subsurface flow dynamics. gradual decrease time-lag between maximum EC minimum, caused dilution from ice melt, is observed over snow-free period, implying progressively shorter residence times. Through our multi-method approach, develop conceptual models for RG-influenced systems time-scales.

Language: Английский

Citations

0