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- W4229458532 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Continuous and slow-moving deep-seated landslides entail challenges for the effective planning of mitigation strategies aiming at the reduction of landslide movements. Given that the activity of most of these landslides is governed by pore pressure variations within the shear zone, profound knowledge about their hydrogeological control is required. In this context, the present study presents a new approach for the spatial assessment of probable recharge areas to better understand a slope's hydrogeological system. The highly automated geo-statistical approach derives recharge probability maps of groundwater based on stable isotope monitoring and a digital elevation model (DEM). By monitoring stable isotopes in both groundwater and precipitation, mean elevations of recharge areas can be determined and further constrained in space with the help of the DEM. The approach was applied to the Vögelsberg landslide, an active slab of a deep-seated gravitational slope deformation (DSGSD) in the Watten valley (Tyrol, Austria). Resulting recharge probability maps indicate that shallow groundwater emerging at springs on the landslide recharges between 1000 and 1650âmâa.s.l. In contrast, groundwater encountered in wells up to 49âm below the landslide's surface indicates a mean recharge elevation of up to 2200âmâa.s.l. matching the highest parts of the catchment. Further inferred proxies, including flow path length, estimated recharge area sizes, and mean transit times of groundwater, resulted in a profound understanding of the hydrogeological driver of the landslide. It is shown that the new approach can provide valuable insights into the spatial pattern of probable recharge areas where mitigation measures aiming at reducing groundwater recharge could be most effective." @default.
- W4229458532 created "2022-05-11" @default.
- W4229458532 creator A5050105627 @default.
- W4229458532 date "2022-05-10" @default.
- W4229458532 modified "2023-10-14" @default.
- W4229458532 title "Reply on RC1" @default.
- W4229458532 doi "https://doi.org/10.5194/nhess-2021-388-ac1" @default.
- W4229458532 hasPublicationYear "2022" @default.
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