Features and Geomorphic Response of Mountainous River by Reach Scale

2021 ◽  
pp. 66-73
Author(s):  
Nor Azidawati Haron ◽  
Badronnisa Yusuf ◽  
Siti Nurhidayu ◽  
Mohd Sofiyan Sulaiman ◽  
Mohd Shahrizal Ab Razak
Keyword(s):  
Geomorphic Response ◽  
Mountainous River

scholarly journals Understanding macroinvertebrate metacommunity organization using a nested study design across a mountainous river network

2021 ◽  
Vol 121 ◽  
pp. 107188
Author(s):  
Zhengfei Li ◽  
Jani Heino ◽  
Xiao Chen ◽  
Zhenyuan Liu ◽  
Xingliang Meng ◽  
...  
Keyword(s):  
Study Design ◽  
River Network ◽  
Mountainous River

scholarly journals Application of SWAT in Hydrological Simulation of Complex Mountainous River Basin (Part II: Climate Change Impact Assessment)

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1548
Author(s):  
Suresh Marahatta ◽  
Deepak Aryal ◽  
Laxmi Prasad Devkota ◽  
Utsav Bhattarai ◽  
Dibesh Shrestha
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Climate Models ◽  
Assessment Tool ◽  
Swat Model ◽  
Global Climate Models ◽  
Climate Data ◽  
The Future ◽  
The Impact ◽  
Mountainous River

This study aims at analysing the impact of climate change (CC) on the river hydrology of a complex mountainous river basin—the Budhigandaki River Basin (BRB)—using the Soil and Water Assessment Tool (SWAT) hydrological model that was calibrated and validated in Part I of this research. A relatively new approach of selecting global climate models (GCMs) for each of the two selected RCPs, 4.5 (stabilization scenario) and 8.5 (high emission scenario), representing four extreme cases (warm-wet, cold-wet, warm-dry, and cold-dry conditions), was applied. Future climate data was bias corrected using a quantile mapping method. The bias-corrected GCM data were forced into the SWAT model one at a time to simulate the future flows of BRB for three 30-year time windows: Immediate Future (2021–2050), Mid Future (2046–2075), and Far Future (2070–2099). The projected flows were compared with the corresponding monthly, seasonal, annual, and fractional differences of extreme flows of the simulated baseline period (1983–2012). The results showed that future long-term average annual flows are expected to increase in all climatic conditions for both RCPs compared to the baseline. The range of predicted changes in future monthly, seasonal, and annual flows shows high uncertainty. The comparative frequency analysis of the annual one-day-maximum and -minimum flows shows increased high flows and decreased low flows in the future. These results imply the necessity for design modifications in hydraulic structures as well as the preference of storage over run-of-river water resources development projects in the study basin from the perspective of climate resilience.

scholarly journals Geomorphic response to sea level and climate changes during Late Quaternary in a humid tropical coastline: Terrain evolution model from Southwest India

PLoS ONE ◽  
2017 ◽  
Vol 12 (5) ◽  
pp. e0176775 ◽  
Author(s):  
Maya K. ◽  
Vishnu Mohan S. ◽  
Ruta B. Limaye ◽  
Damodaran Padmalal ◽  
Navnith K. P. Kumaran
Keyword(s):  
Sea Level ◽  
Climate Changes ◽  
Late Quaternary ◽  
Evolution Model ◽  
Geomorphic Response ◽  
Southwest India

Geomorphic response to rock strength and elasticity

1983 ◽  
Vol 27 (4) ◽  
pp. 483-493
Author(s):  
J. Cooks
Keyword(s):  
Rock Strength ◽  
Geomorphic Response

scholarly journals Quantitative evaluation of the rainfall influence on streamflow in an inland mountainous river basin within Central Asia

2017 ◽  
Vol 63 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Congjian Sun ◽  
Yanjun Shen ◽  
Yaning Chen ◽  
Wei Chen ◽  
Weibo Liu ◽  
...  
Keyword(s):  
Central Asia ◽  
River Basin ◽  
Quantitative Evaluation ◽  
Mountainous River

Cries in the Dark: Reconstruction after Hurricane Mitch in Honduras

2006 ◽  
Vol 31 (1) ◽  
pp. 31-38
Author(s):  
Kurt Rhyner
Keyword(s):  
High Risk ◽  
Low Cost ◽  
Construction Materials ◽  
Natural Phenomenon ◽  
Police Chief ◽  
Hurricane Mitch ◽  
The Public ◽  
Risk Areas ◽  
Mountainous River

Disasters are always caused by a combination of factors, and the natural phenomenon that brings them on is usually just a catalyst. The underlying cause of most disasters is poverty as mostly the poor segments of the population usually live in high risk areas where their shelter all too often cannot withstand even light winds, small inundations or medium earthquakes. When Hurricane Mitch hit Central America in October 1998, all countries were ill prepared. A few weeks earlier, the authorities of the Honduran capital, Tegucigalpa, had attempted to simulate an evacuation, but it had met with a great degree of resistance from the public. When Mitch hit, unprecedented masses of water raced down the mountainous river beds. People were taken by surprise, as no efficient organisation existed. Everybody ran for their lives. Houses slid down hillsides, rivers swept bridges, houses and people with them. Six years later, Tegucigalpa looks very similar to the days before Mitch. The steep hillsides are covered with a potpourri of dwellings, from miserable huts to solid upmarket houses. Regulations were passed in the year 2002 to prohibit construction in high risk areas; however, enforcement is difficult, especially when existing buildings are renovated and even enlarged. Theoretically it is possible to evacuate high risk areas. Nonetheless, such drastic measures are virtually impossible to implement, as no mayor or police chief would survive such an action in office. The paper presents a case study which shows that the underlying problems of poverty and the non-availability of suitable land for people to relocate from high risk areas can usually not be overcome by post-disaster reconstruction programmes. A mitigation strategy is thus to empower inhabitants of high risk areas to improve their own situation by affordable access to information, advice and suitable low cost construction materials through “Building Advisory Services” and Ecomaterials producers within the neighbourhoods.

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