The Resource Morpho-tectonic analysis of the Tekeze and the Blue Nile drainage systems of northwestern Ethiopian Plateau, Ethiopia, by Elamin Hassan Dai Ismail, (electronic resource)

Morpho-tectonic analysis of the Tekeze and the Blue Nile drainage systems of northwestern Ethiopian Plateau, Ethiopia, by Elamin Hassan Dai Ismail, (electronic resource)

Label
Morpho-tectonic analysis of the Tekeze and the Blue Nile drainage systems of northwestern Ethiopian Plateau, Ethiopia
Title
Morpho-tectonic analysis of the Tekeze and the Blue Nile drainage systems of northwestern Ethiopian Plateau, Ethiopia
Statement of responsibility
by Elamin Hassan Dai Ismail
Creator
Subject
Genre
Language
eng
Summary
"This study examines the morpho-tectonic evolution of the drainage system in the northwestern Ethiopian plateau by focusing on the Tekeze and the Blue Nile Rivers. The plateau is underlain by Precambrian crystalline rocks, overlain by Mesozoic sedimentary section that is topped with a 1-3 km thick pile of Oligocene-Quaternary volcanic rocks. It is bounded in the east and southeast by the Afar Depression (AD) and the Main Ethiopian Rift (MER). Satellite derived Digital Elevation Models are analyzed using ArcGIS and RiverTools to extract morpho-tectonic parameters of tributaries of the Tekeze and Blue Nile Rivers including Normalized Steepness Index (K[subscript sn]), Concavity (k), Regression Fit (r2), and spatial distribution of major and minor knickpoints and faults. Two end-member models have been previously proposed: 1) a steady-state rate of incision since the beginning of the development of these drainage systems (3̃0 Ma) or 2) a rate of incision that increased through time. This study shows that the incision history of these drainage systems is more complex than can be explained by these two end-member models. Nevertheless, the models are still valid explanations for specific regions of the plateau. The evolution of the drainage systems on the NW plateau is influenced by three tectonic and geological events: 1) The rising of the Afar mantle plume (3̃0 Ma) created a moderate increase in the incision rate of the entire plateau, 2) a localized increase in the incision rate associated with the shield volcanoes build-up event (2̃2 Ma) and lastly 3) a significant increase of the incision rate in the eastern part of the northwestern plateau due to rift-flank uplift on western escarpment of the AD and the northwestern escarpment of the MER. This uplift diminishes westward leaving the drainage system in the lower reaches of the Tekeze and Blue Nile Rivers relatively tectonically undisturbed, hence establishing a long-lived hydrological stability and reaching steady-state equilibrium"--Abstract, p. iii
Related
Cataloging source
UMR
http://library.link/vocab/creatorDate
1952-
http://library.link/vocab/creatorName
Ismail, Elamin Hassan Dai
Degree
M.S.
Dissertation year
2011.
Granting institution
Missouri University of Science and Technology
Illustrations
  • illustrations
  • maps
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • theses
http://library.link/vocab/subjectName
  • Morphotectonics
  • Hydrology
  • Tekeze River (Ethiopia and Sudan)
  • Blue Nile River (Ethiopia and Sudan)
Target audience
specialized
Label
Morpho-tectonic analysis of the Tekeze and the Blue Nile drainage systems of northwestern Ethiopian Plateau, Ethiopia, by Elamin Hassan Dai Ismail, (electronic resource)
Instantiates
Publication
Note
  • Vita
  • The entire thesis text is included in file
  • Title from title screen of thesis/dissertation PDF file (viewed August 1, 2011)
Bibliography note
Includes bibliographical references (pages 100-105)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
743793115
Dimensions
unknown
Extent
1 online resource (viii, 106 pages)
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, maps, digital, PDF file.
Specific material designation
remote
System control number
(OCoLC)743793115
System details
  • System requirements: Adobe Acrobat Reader; Internet browser
  • Mode of access: World Wide Web
Label
Morpho-tectonic analysis of the Tekeze and the Blue Nile drainage systems of northwestern Ethiopian Plateau, Ethiopia, by Elamin Hassan Dai Ismail, (electronic resource)
Publication
Note
  • Vita
  • The entire thesis text is included in file
  • Title from title screen of thesis/dissertation PDF file (viewed August 1, 2011)
Bibliography note
Includes bibliographical references (pages 100-105)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
743793115
Dimensions
unknown
Extent
1 online resource (viii, 106 pages)
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, maps, digital, PDF file.
Specific material designation
remote
System control number
(OCoLC)743793115
System details
  • System requirements: Adobe Acrobat Reader; Internet browser
  • Mode of access: World Wide Web

Library Locations

  • Curtis Laws Wilson LibraryBorrow it
    400 West 14th Street, Rolla, MO, 65409, US
    37.955220 -91.772210
  • Missouri University of Science & Technology Library DepositoryBorrow it
    2908 Lemone Blvd, Columbia, MO, 65201, US
    38.919360 -92.291620
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