Design For Deepwater Pipelines On Steep Slopes Impacted By Mass Gravity And Turbidity Current Flows

2010 ◽  
Author(s):  
Amitabh Kumar ◽  
Brian M. McShane ◽  
William Leith McDonald
Keyword(s):  
Turbidity Current ◽  
Current Flows ◽  
Steep Slopes

scholarly journals 3D Multiphase Numerical Modelling for Turbidity Current Flows

10.5772/36177 ◽  
2012 ◽  
Author(s):  
A. Georgoulas ◽  
P. Angelidis ◽  
K. Kopasakis ◽  
N. Kotsovinos
Keyword(s):  
Numerical Modelling ◽  
Turbidity Current ◽  
Current Flows

scholarly journals Channel-levee evolution in combined contour current-turbidity current flows from flume tank experiments: REPLY

Geology ◽  
2020 ◽  
Vol 48 (8) ◽  
pp. e508-e508
Author(s):  
Elda Miramontes ◽  
Joris T. Eggenhuisen ◽  
Ricardo Silva Jacinto ◽  
Giovanni Poneti ◽  
Florian Pohl ◽  
...  
Keyword(s):  
Turbidity Current ◽  
Current Flows

scholarly journals Seismoturbidite record as preserved at core sites at the Cascadia and Sumatra–Andaman subduction zones

2013 ◽  
Vol 13 (4) ◽  
pp. 833-867 ◽  
Author(s):  
J. R. Patton ◽  
C. Goldfinger ◽  
A. E. Morey ◽  
C. Romsos ◽  
B. Black ◽  
...  
Keyword(s):  
Subduction Zones ◽  
Low Frequency ◽  
Turbidity Current ◽  
Turbidity Currents ◽  
Earthquake Rupture ◽  
Glacial Cycle ◽  
Basin Effects ◽  
Frequency Components ◽  
Temporal And Spatial ◽  
Current Flows

Abstract. Turbidite deposition along slope and trench settings is evaluated for the Cascadia and Sumatra–Andaman subduction zones. Source proximity, basin effects, turbidity current flow path, temporal and spatial earthquake rupture, hydrodynamics, and topography all likely play roles in the deposition of the turbidites as evidenced by the vertical structure of the final deposits. Channel systems tend to promote low-frequency components of the content of the current over longer distances, while more proximal slope basins and base-of-slope apron fan settings result in a turbidite structure that is likely influenced by local physiography and other factors. Cascadia's margin is dominated by glacial cycle constructed pathways which promote turbidity current flows for large distances. Sumatra margin pathways do not inherit these antecedent sedimentary systems, so turbidity currents are more localized.

scholarly journals Channel-levee evolution in combined contour current–turbidity current flows from flume-tank experiments: COMMENT

Geology ◽  
2020 ◽  
Vol 48 (8) ◽  
pp. e507-e507
Author(s):  
Chenglin Gong ◽  
Ronald J. Steel ◽  
Yingmin Wang
Keyword(s):  
Turbidity Current ◽  
Current Flows

DEVELOPING AND SELECTING SLOPE STABILIZATION TECHNIQUES IN MANAGING SLOPE FAILURES

2016 ◽  
Vol 12 (4) ◽  
Author(s):  
Ari Sandyavitri
Keyword(s):  
Retaining Wall ◽  
Value Engineering ◽  
Rating Systems ◽  
Slope Stabilization ◽  
Rockfall Hazard ◽  
Proactive Approach ◽  
West Sumatra ◽  
Hazard Rating ◽  
Hazard Rating Systems ◽  
Steep Slopes

This paper objectives are to; (i) identification of risky slopes (within 4 Provinces in Sumatra including Provinces of Riau, West Sumatra, Jambi and South Sumatra encompassing 840 kms of the “Jalan Lintas Sumatra” highway) based on Rockfall Hazard Rating Systems (RHRS) method; (ii) developing alternatives to stabilize slope hazards, and (iii) selecting appropriate slopes stabilization techniques based on both proactive approach and value engineering one. Based on the Rockfall Hazard Rating Systems (RHRS) method, it was identified 109 steep slopes prone to failure within this highway section. Approximately, 15 slopes were identified as potential high-risk slopes (RHRS scores were calculated >200 points). Based on the proactive approach, seven riskiest slopes ware identified. The preferred stabilization alternatives to remedy most of these slopes are suggested as follow; either (i) a combination of retaining wall and drainage, or (ii) gabion structure and drainage. However, different approaches may yield different results, there are at least 2 main consideration in prioritizing slope stabilization; (i) based on the riskiest slopes, and(ii) the least expensive stabilization alternatives.

ECONOMIC AND SILVICULTURAL EFFICIENCY OF CREATION OF PROTECTIVE FOREST PLANTATIONS ON STEEP SLOPES

2018 ◽  
Vol 10 (4) ◽  
pp. 35-41
Author(s):  
P.N. Proyezdov ◽  
◽  
D.A. Mashtakov ◽  
A.N. Avtonomov ◽  
◽  
...  
Keyword(s):  
Forest Plantations ◽  
Protective Forest ◽  
Steep Slopes

ANALISIS KONDISI BAWAH PERMUKAAN DAN RISIKO BENCANA TANAH LONGSOR UNTUK ARAHAN PENATAAN KAWASAN DI DESA TENGKLIK KECAMATAN TAWANGMANGU KABUPATEN KARANGANYAR JAWA TENGAH

2013 ◽  
Vol 13 (2) ◽  
Author(s):  
Heru Sri Naryanto
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Regional Planning ◽  
Rainy Season ◽  
Great Influence ◽  
Landslide Risk ◽  
Potential Hazard ◽  
Volcanic Deposits ◽  
Steep Topography ◽  
Steep Slopes

Karanganyar District is a hilly area with steep slopes, rock constituent of young volcanic deposits of Lawu Volcano products, thick soil and relatively high rainfall, so it is potential for large landslides in this region. The landuse in the Karanganyar District including the Tengklik Village is generally dominated by rice fields, seasonal gardens and settlements. Plantation made up in areas with steep topography has great influence on erosion and landslides. Similarly, many settlements are built on a slope so that the area is very vulnerable to the threat of landslides. In the rainy season landslides are common. The potential hazard of landslidesoccurred in 14 sub districts in Karanganyar District. Large landslides have occurred in Karanganyar on December 26, 2007 which claimed the lives of 62 people, with the greatest victims were in the Ledoksari Village, Tawangmangu. The Tengklik Village has already experienced creep type landslides, which have destroyed settlements, roads, seasonalgardens and all existing infrastructure in the area. In order to do the proper handling and anticipation of a catastrophic landslide, a variety of technological applications landslides using geographic information system (GIS) was then carried out, to detect the configuration of 2D geoelectrical subsurface prone areas for landslide risk study and regional planning.

Kajian Debit Sungai di DAS Wae Ruhu, Kota Ambon

2018 ◽  
Vol 1 (1) ◽  
pp. 18-23
Author(s):  
Matheus Souisa ◽  
Paulus R. Atihuta ◽  
Josephus R. Kelibulin
Keyword(s):  
River Discharge ◽  
River Flow ◽  
Secondary Data ◽  
Data Retrieval ◽  
Sediment Discharge ◽  
Flood Prevention ◽  
Retrieval Processes ◽  
Water Catchment ◽  
Steep Slopes ◽  
Station Point

Ambon City is a region consisting of hilly areas and steep slopes with diverse river characteristics. Research has been carried out in the Wae Ruhu watershed in Ambon City which starts from upstream (water catchment) to downstream. This study aims to determine the magnitude of river discharge and sediment discharge in the Wae Ruhu watershed. This research was conducted in several stages including, secondary data collection, research location survey, preparation of research tools and materials as well as field data retrieval processes which included tracking coordinates at each station point and entire watershed, calculation of river flow velocity, river geometry measurements, and sampling sediment. The results showed that the average river discharge in the Wae watershed in the year 2018 was 1.24 m3 / s, and the average sediment discharge was 6.27 kg / s. From the results of this study and the field observations proposed for flood prevention and the rate of sediment movement are the construction of cliffs with sheet pile and gabions.

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