scholarly journals EXTREME EROSION EVENT ON AN ARTIFICIAL BEACH

1988 ◽  
Vol 1 (21) ◽  
pp. 139 ◽  
Author(s):  
J.P. Moller ◽  
D.H. Swart
Keyword(s):  
Sea Level ◽  
West African ◽  
Beach Profile ◽  
The South ◽  
Data Set ◽  
South West ◽  
Artificial Nourishment

At Oranjemund just north of the mouth of the Orange on the South-West African/ Namibian coastline the Consolidated Diamond Mines (Pty) Limited (CDM) is mining for diamonds in the inshore area. They use an artificially-built seawall of sand to keep the sea out of the paddocks which are being stripped and mined at bedrock level, which is well below sea level. The seawall runs parallel to the original shoreline at a distance of up to 350 m offshore. The beach profile is correspondingly very steep and under most conditions offshore sediment losses occur, which are compensated for by artificial nourishment. During February 1987 offshore losses of about 120 m per running metre of seawall were recorded from above the waterline. In this paper a data set is presented to serve as a basis for the calibration of on-offshore sediment models and some simulations are reported on.

The Base and Top of the Coral-rock in Barbados

1937 ◽  
Vol 74 (8) ◽  
pp. 337-359 ◽  
Author(s):  
C. T. Trechmann
Keyword(s):  
Sea Level ◽  
The South ◽  
The West ◽  
East Part ◽  
Varying Thickness ◽  
South West ◽  
New Information ◽  
Main Portion ◽  
Coral Rock

1. The coral-rock commences nearly everywhere with a basal bed of varying thickness containing a fauna of pre-Pleistocene aspect among which the genus Haliotis (absent from these coasts at the present day), Pleurotomaria, Meiocardia, etc., are noticeable. This faunule may have lived at a depth of 700–1,000 feet.2. The supposition that the southerly anticlines are a later uplift than the main portion of Barbados is supported by the absence of ravines, and the presence of post-coral-rock beds which occur as coastal veneers at low altitudes, and in greater thickness in the south-east corner near Whitehaven.3. The south-east part of the island from Consett Point to Ragged Point has probably extended further seawards in comparatively recent times ; the series of converging faults and dislocations in the cliff sections suggest that the thrusts from the west or south-west may have been resisted by this part of the island.4. The relative claims of fault-scarping or marine erosion in production of the rising terraces is discussed ; and new information regarding the thickness of the coral-rock at sea-level from a boring is detailed.5. The finding of a faunule with Pliocene or possibly Miocene affinities at the base of the coral-rock puts the Oceanic series further back, into the Miocene.

Prehistoric Roads and Tracks in Somerset, England: 2. Neolithic

1970 ◽  
Vol 36 ◽  
pp. 125-151 ◽  
Author(s):  
John M. Coles ◽  
F. Alan Hibbert ◽  
Colin F. Clements
Keyword(s):  
Sea Level ◽  
The South ◽  
The West ◽  
The Third ◽  
The North ◽  
South West ◽  
Extensive Region ◽  
Peat Deposits ◽  
Third Millennium ◽  
South West England

The Somerset Levels are the largest area of low-lying ground in south-west England, covering an extensive region between the highlands of Exmoor, the Brendon Hills and the Quantock Hills to the west, and the Cotswold and Mendip Hills to the east (Pl. XXIII, inset). The Quantock Hills and the Mendip Hills directly border the Levels themselves, and reach heights of over 250 metres above sea level. The valley between extends to 27 metres below sea level, but is filled to approximately the height of the present sea by a blue-grey clay. The Levels are bisected by the limestone hills of the Poldens, and both parts have other smaller areas of limestone and sand projecting above the peat deposits that cap the blue-grey clay filling. In this paper we are concerned with the northern part of the Levels, an area at present drained by the River Brue.The flat, peat-covered floor of the Brue Valley is some six kilometres wide and is flanked on the north by the Wedmore Ridge, and on the south by the Polden Hills (Pl. XXIII). In the centre of the valley, surrounded by the peat, is a group of islands of higher ground, Meare, Westhay, and Burtle. These islands, which would always have provided relatively dry ground in the Levels, are linked together by Neolithic trackways of the third millennium B.C. Several of these trackways formed the basis of a paper in these Proceedings in 1968 (Coles and Hibbert, 1968), which continued the work of Godwin and others (Godwin, 1960; Dewar and Godwin, 1963).

Steroids ketones in surface sediments from the south-west African shelf

Nature ◽  
1979 ◽  
Vol 277 (5694) ◽  
pp. 287-289 ◽  
Author(s):  
ROBERT B. GAGOSIAN ◽  
STEVEN O. SMITH
Keyword(s):  
Surface Sediments ◽  
West African ◽  
The South ◽  
South West

scholarly journals Incipient Glacier Development within Katmai Caldera, Alaska

1957 ◽  
Vol 3 (21) ◽  
pp. 13-17
Author(s):  
E. H. Muller ◽  
H. W. Coulter
Keyword(s):  
Sea Level ◽  
Wall Rock ◽  
Crater Wall ◽  
The South ◽  
The Past ◽  
The North ◽  
South West ◽  
Direction Of Movement ◽  
North And South

AbstractAn unusual opportunity for the study of glaciers in the process of development is afforded in Katmaicaldera in south-western Alaska. A violent eruption in 1912 destroyed the summit of glacier-clad Mount Katmai, creating a caldera 4 km. wide and 800 m. deep. Ice cliffs produced by beheading of the glaciers have since thinned and shrunk away from the rim of the caldera, except in the south-west. There, local reversal of direction of movement has resulted in an ice fall which descends part way down the crater wall. In the past thirty years two small glaciers have formed, near 1525 m. above sea level, within the caldera on large masses of slumped wall-rock below the north and south rims respectively. Elsewhere the sheer walls of the crater descend so steeply to the level of the caldera lake that permanent snowbanks cannot accumulate. The lake, which continues to rise at a rate of more than five meters per year, is at present the primary deterring factor in glacier development in the caldera.

scholarly journals Tides and sea‐level variability in the south‐west Pacific from TOPEX/Poseidon

2004 ◽  
Vol 38 (4) ◽  
pp. 649-669 ◽  
Author(s):  
M. G. G. Foreman ◽  
R. G. Bell ◽  
J. Y. Cherniawsky ◽  
B. Beckley
Keyword(s):  
Sea Level ◽  
The South ◽  
Sea Level Variability ◽  
West Pacific ◽  
South West ◽  
And Sea Level

scholarly journals I.—The Kishon and Jordan Valleys

1904 ◽  
Vol 1 (12) ◽  
pp. 575-582 ◽  
Author(s):  
T. G. Bonney
Keyword(s):  
Sea Level ◽  
Difficult Problem ◽  
The South ◽  
North West ◽  
The North ◽  
South West ◽  
Western Side ◽  
Physical Geology

That broad trench through the Palestine Highlands, an ancient highway and battlefield of nations—the plain of Esdraelon or the valley of Megiddo, together with the plain of Acre—has for long presented to me a difficult problem in Physical Geology, for it seemed inexplicable by subaerial denudation under existing conditions. Its floor varies roughly from five to eight miles in breadth; running approximately from south-east to north-west, it is bounded on the more western side by the limestone mountains of Samaria and on the more eastern by those of Galilee. The former descend from the ridge of Carmel (1,742 feet at highest) with a fairly steep escarpment, which becomes a little less regular as we follow it to the bastion-mass of Mount Gilboa; the latter correspond in their general outlines with those of the eastern portion of Samaria, but the advance of a lower spur towards the south-west divides the plain of Esdraelon from that of Acre, by a kind of strait in which, so far as I could see, there is but little level ground on either side of the Kishon. This spur, however, of the northern hills, hardly does more than interrupt the floor of the Kishon valley, for above it the great trench is continued between two hill masses, much of these ranging from thirteen to sixteen hundred feet above sea-level. Beyond the strait the upper basin (plain of Esdraelon) quickly broadens out, extending towards the south-east for about fifteen or sixteen miles, where it is divided into two arms by Jebel Duhy (Little Hermon) (1,690 feet), which is thus isolated from Tabor (1,846 feet) on the north, and from Gilboa (1,698 feet) on the south; a broad, rather shallow, grassy valley descending from the last-named mass to lose itself in the plain.

scholarly journals An investigation whether the deputy president of the African National Congress can be the successor to the president during the National Elective Conference

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Mavhungu E. Musitha ◽  
Mavhungu A. Mafukata
Keyword(s):  
Qualitative Study ◽  
Communist Party ◽  
Chinese Communist Party ◽  
West African ◽  
African National Congress ◽  
The South ◽  
South West ◽  
National Congress ◽  
People’S Organisation ◽  
Policy And Procedure

This is a qualitative study which investigated whether the deputy president of the African National Congress (ANC) can be the heir and elected president in the December 2017 elective conference. The study found that the deputy president is not the heir to the position of the president but that anybody can be elected to the position in terms of the existing constitution. The study also found that while the ANC has a constitution that prescribes how members are elected to positions, it is open to manipulation by those who wish to position their preferred comrades. The ANC does not have a clear policy or procedure to decide who succeeds to the presidency. This lack of policy has led to infighting among the comrades along factional lines as they seek to capture the soul of the ANC. The study found that most former liberation ruling parties such as ZANU–PF and the South West African People’s Organisation are faced with the same challenge. The Chinese Communist Party has faced and overcome this challenge by formulating a clear policy and procedure on who becomes the president or leader of the party. The study recommends that the ANC should formulate clear policies and regulations to define and determine who becomes its president.

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