Sediment deposition (1940‐2017) in a historically pristine lake in a rapidly developing tropical highland region in Ethiopia

2021 ◽  
Author(s):  
Mebrahtom G. Kebedew ◽  
Seifu A. Tilahun ◽  
Mulugeta A. Belete ◽  
Fasikaw A. Zimale ◽  
Tammo S. Steenhuis
Keyword(s):  
Sediment Deposition ◽  
Highland Region

Excavations at Miltown of Clava, Inverness-shire

1993 ◽  
Vol 18 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Niall M Sharples
Keyword(s):  
Highland Region ◽  
Large Spread

Summary This report presents the results of the excavation of a cairn at Miltown of Clava, Inverness District, Highland Region. The excavations were superficial but revealed that underneath a large spread of more recent field clearance was a prehistoric cairn probably of Clava type. The cairn was circular with an estimated diameter of 12m. To the SW of the cairn is a large standing stone and lying on the cairn was a large slab decorated with small cup marks. The presence of both these features is characteristic of Clava type cairns.

HOW DO LOW-HEAD DAMS AFFECT SEDIMENT DEPOSITION AND TOXICITY IN INDIAN CREEK IN SOUTHERN INDIANA?

2018 ◽  
Author(s):  
Emily A. Brown ◽  
◽  
Martha Carlson Mazur ◽  
Cassie Hauswald
Keyword(s):  
Sediment Deposition ◽  
Low Head ◽  
Indian Creek

Analysis of sediment deposition in Lushui Reservoir to guide dredging

2021 ◽  
Vol 14 (2) ◽  
Author(s):  
Hua Ge ◽  
Lingling Zhu ◽  
Qiusheng Lin ◽  
Chunyan Deng
Keyword(s):  
Sediment Deposition

Lateral shoreline erosion and shore-proximal sediment deposition on a coastal MARSH from seasonal, storm and decadal measurements

Geomorphology ◽  
2021 ◽  
pp. 107829
Author(s):  
Kathryn E.L. Smith ◽  
Joseph F. Terrano ◽  
Nicole S. Khan ◽  
Christopher G. Smith ◽  
Jonathan L. Pitchford
Keyword(s):  
Sediment Deposition ◽  
Coastal Marsh ◽  
Shoreline Erosion

scholarly journals Reassessing Existing Reservoir Supply Capacity and Management Resilience under Climate Change and Sediment Deposition

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1819
Author(s):  
Eleni S. Bekri ◽  
Polychronis Economou ◽  
Panayotis C. Yannopoulos ◽  
Alexander C. Demetracopoulos
Keyword(s):  
Climate Change ◽  
Climate Models ◽  
Global Climate ◽  
Vital Role ◽  
Sediment Deposition ◽  
Global Climate Models ◽  
Exceedance Probability ◽  
Climate Change Effects ◽  
Management Scenario ◽  
Supply Capacity

Freshwater resources are limited and seasonally and spatially unevenly distributed. Thus, in water resources management plans, storage reservoirs play a vital role in safeguarding drinking, irrigation, hydropower and livestock water supply. In the last decades, the dams’ negative effects, such as fragmentation of water flow and sediment transport, are considered in decision-making, for achieving an optimal balance between human needs and healthy riverine and coastal ecosystems. Currently, operation of existing reservoirs is challenged by increasing water demand, climate change effects and active storage reduction due to sediment deposition, jeopardizing their supply capacity. This paper proposes a methodological framework to reassess supply capacity and management resilience for an existing reservoir under these challenges. Future projections are derived by plausible climate scenarios and global climate models and by stochastic simulation of historic data. An alternative basic reservoir management scenario with a very low exceedance probability is derived. Excess water volumes are investigated under a probabilistic prism for enabling multiple-purpose water demands. Finally, this method is showcased to the Ladhon Reservoir (Greece). The probable total benefit from water allocated to the various water uses is estimated to assist decision makers in examining the tradeoffs between the probable additional benefit and risk of exceedance.

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