Rapid evacuation of suspended sediment loads during landslides in steep gradient rivers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10497153" target="_blank" >RIV/00216208:11310/25:10497153 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=hjqNQV6K3O" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=hjqNQV6K3O</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/2515-7620/adb8a7" target="_blank" >10.1088/2515-7620/adb8a7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rapid evacuation of suspended sediment loads during landslides in steep gradient rivers

Popis výsledku v původním jazyce

Mass wasting events, such as channelized debris flows, can result in heavy sediment fluxes in river systems. On July 30, 2024, a catastrophic debris flow in Wayanad, India, resulted in over 252 fatalities, and deposited approximately 5 million m3 of sediments into the Chaliyar River Valley. We measured sediment fluxes in Chaliyar before, during, and after the event through in situ water sample analysis. Suspended sediment concentrations (SSC&apos;s) during June and July 2024, prior to the debris flow, were highly variable, with peak values reaching 71.72 mg l(-1). On the day of the event, the debris flow perturbed the river channel, resulting in a rapid, two-order-of-magnitude spike in SSC compared to June-July averages. Within 48 h post-event, the SSC levels returned to background levels, underscoring the transient nature of this intense geomorphic activity. Our research provides valuable insights into the rapid sediment evacuation processes of small, steep rivers following major landslide events.

Název v anglickém jazyce

Rapid evacuation of suspended sediment loads during landslides in steep gradient rivers

Popis výsledku anglicky

Mass wasting events, such as channelized debris flows, can result in heavy sediment fluxes in river systems. On July 30, 2024, a catastrophic debris flow in Wayanad, India, resulted in over 252 fatalities, and deposited approximately 5 million m3 of sediments into the Chaliyar River Valley. We measured sediment fluxes in Chaliyar before, during, and after the event through in situ water sample analysis. Suspended sediment concentrations (SSC&apos;s) during June and July 2024, prior to the debris flow, were highly variable, with peak values reaching 71.72 mg l(-1). On the day of the event, the debris flow perturbed the river channel, resulting in a rapid, two-order-of-magnitude spike in SSC compared to June-July averages. Within 48 h post-event, the SSC levels returned to background levels, underscoring the transient nature of this intense geomorphic activity. Our research provides valuable insights into the rapid sediment evacuation processes of small, steep rivers following major landslide events.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Research Communications

ISSN

—

e-ISSN

2515-7620

Svazek periodika

7

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

031002

Kód UT WoS článku

001436906600001

EID výsledku v databázi Scopus

2-s2.0-86000352925