GM4.2 | Hydrogeomorphic cascading processes and hazards impacted by environmental changes and extreme events
EDI
Hydrogeomorphic cascading processes and hazards impacted by environmental changes and extreme events
Co-organized by HS13/NH10
Convener: Eleonora DallanECSECS | Co-conveners: Yuval ShmilovitzECSECS, Andrea BrennaECSECS, Tobias Heckmann, Jacob HirschbergECSECS, Martin Mergili, Virginia Ruiz-Villanueva
Orals
| Tue, 16 Apr, 14:00–15:45 (CEST), 16:15–18:00 (CEST)
 
Room -2.20
Posters on site
| Attendance Wed, 17 Apr, 10:45–12:30 (CEST) | Display Wed, 17 Apr, 08:30–12:30
 
Hall X3
Posters virtual
| Attendance Wed, 17 Apr, 14:00–15:45 (CEST) | Display Wed, 17 Apr, 08:30–18:00
 
vHall X3
Orals |
Tue, 14:00
Posters on site |
Wed, 10:45
Posters virtual
Wed, 14:00
Hydrogeomorphic processes may naturally act together or interact in a given space or time, creating cascades. Many regions worldwide are already experiencing an increase in cascading processes, often driven by extreme events, with severe impacts that may worsen under future climatic and environmental changes. The physical response to these cascades is hardly predictable due to their complex nature, the interplay between different predisposing, triggering and controlling factors, and the rarity of these events.
Addressing the hazards and impacts resulting from the combination of multiple processes faces enormous challenges, primarily from a still incomplete process interaction understanding. In addition, expertise is scattered across disciplines (e.g., geomorphology, geology, hydrology, climate sciences) and beyond (e.g., civil engineering, social science). A better understanding of cascading processes under environmental changes and extreme events is of critical importance to deciphering impacts of past environmental changes and to develop and influence policy to face future challenges under a changing climate.

This interdisciplinary session aims to shed light on the current knowledge regarding cascading hydrogeomorphic processes and related hazards and to propose novel frameworks for understanding, monitoring, and modeling their complex feedback and interactions. A particular focus is paid on regions affected by diverse environmental changes and extreme events. We welcome scientific contributions in the domain of cascading processes, including (but not restricted to) the study of the link between extreme climatic forcing and hydrogeomorphic processes, and surface processes complexity, such as connectivity or dis-connectivity between hillslopes and fluvial processes. We welcome studies from all climates and at all temporal scales; from the event scale to the long-term integrated impact of cascading processes on the landscape. We invite contributions showing novel monitoring, experimental, theoretical, conceptual and computational modeling approaches. Proposed management strategies to assess cascading processes-related hazards will also be well received.

Orals: Tue, 16 Apr | Room -2.20

Chairpersons: Andrea Brenna, Tobias Heckmann, Virginia Ruiz-Villanueva
14:00–14:01
Session introduction
Cascading hazards in diverse environments
EGU24-16937
|
solicited
|
Highlight
|
On-site presentation
Cascading Hazards – the challenges to understand interactions
Margreth Keiler
EGU24-10776
|
On-site presentation
Amplified Risk: How Climate Change is Modifying the Risks from Geological Hazards
Mary Antonette Beroya-Eitner et al.
14:51–14:57
discussion
Sediment cascade in rivers
EGU24-19175
|
On-site presentation
Non-uniqueness in sediment transport in river network hydrology-sediment modelling
Peter Molnar et al.
EGU24-10429
|
ECS
|
On-site presentation
Interaction Between Large Wood and Sediment Transport in an Alpine Torrent in the Dolomites
Marco Martini et al.
15:37–15:45
discussion
Coffee break
Chairpersons: Eleonora Dallan, Jacob Hirschberg, Martin Mergili
Introduction II block
Extreme precipitation-induced cascading hazards
EGU24-14250
|
ECS
|
Highlight
|
On-site presentation
Widespread cascading torrential hazards in tropical regions 
Maria Isabel Arango et al.
16:55–17:03
discussion
EGU24-5581
|
ECS
|
solicited
|
On-site presentation
Quantifying the effects of rainfall temporal variability on landscape evolution processes
Taiqi Lian et al.
17:13–17:18
Q&A solicited
EGU24-20086
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On-site presentation
Soil erosion as driven by rainfall-cell patterns using weather-radar at regional-scale
(withdrawn)
Rossano Ciampalini et al.
17:48–18:00
discussion; advertising posters

Posters on site: Wed, 17 Apr, 10:45–12:30 | Hall X3

Display time: Wed, 17 Apr 08:30–Wed, 17 Apr 12:30
Chairpersons: Eleonora Dallan, Andrea Brenna, Jacob Hirschberg
EGU24-17658
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ECS
|
OSPP
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On-site presentation
Addressing the 'Black Hole' amidst Sediment Connectivity and Multi-Hazards
Ishmam Kabir et al.
EGU24-14699
|
ECS
|
On-site presentation
How will bedload transport respond to climate change in Alpine regions? The "ALTROCLIMA" project
Felix Pitscheider et al.

Posters virtual: Wed, 17 Apr, 14:00–15:45 | vHall X3

Display time: Wed, 17 Apr 08:30–Wed, 17 Apr 18:00
Chairpersons: Eleonora Dallan, Andrea Brenna, Jacob Hirschberg