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1 edition of Study of the waves and refraction in relation to beach erosion along the Kerala Coast found in the catalog.

Study of the waves and refraction in relation to beach erosion along the Kerala Coast

Study of the waves and refraction in relation to beach erosion along the Kerala Coast

interim report for the year 1980

by

  • 288 Want to read
  • 8 Currently reading

Published by Centre for Earth Science Studies in Trivandrum, India .
Written in English

    Subjects:
  • Ocean waves -- India -- Malabar Coast.,
  • Beach erosion -- India -- Malabar Coast.

  • Edition Notes

    Bibliography: p. 27-28.

    StatementM. Baba ... [et al.].
    SeriesTechnical report / Centre for Earth Science Studies -- no. 29-1983., Technical report (Centre for Earth Science Studies, Trivandrum) -- no. 29.
    ContributionsBaba, M., Centre for Earth Science Studies, Trivandrum.
    The Physical Object
    Pagination28, [14] p. :
    Number of Pages28
    ID Numbers
    Open LibraryOL15445631M

    Study 84 Exam 3 flashcards from Nicki D. on StudyBlue. he most volumetrically significant greenhouse gas is actually water vapor, but there are two other greenhouse gases that are important because they are increasing in the atmosphere and are in part produced by human activity. The great majority of large breakers seen at a beach result from distant winds. Five factors influence the formation of the flow structures in wind waves: Wind speed or strength relative to wave speed—the wind must be moving faster than the wave crest for energy transfer; The uninterrupted distance of open water over which the wind blows without significant change in direction (called the fetch).


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Study of the waves and refraction in relation to beach erosion along the Kerala Coast Download PDF EPUB FB2

Using the British Admiralty bathymetric charts off the West Coast of India and employing the graphical method of constructing wave refraction diagrams, an attempt is made to study the behaviour of the shortperiod waves (4, 5 and 6 seconds) which are found to affect the coast generally in the neighbourhood of Cochin Port entrance.

Nineteen stations, at intervals of roughly one mile, are Cited by: 3. Abstract. The thickly populated coastal zone of Kerala, India is facing severe problems due to attack of high waves during the southwest monsoon.

Systematic beach profiling at 5-km intervals was carried out along the km stretch of the Kerala coast during the pre-and postmonsoon seasons Cited by: 7. In certain stretches, there is concentration of wave energy due to refraction and these areas are more vulnerable to erosion.

Beaches adjacent to coast parallel rivers are also more vulnerable to Author: Subba Rao. Baba M, Kurian N P, Thomas K. V, Prasannakumar M, Shahul Hameed T S and Harish C M Study of the waves and refraction in relation to beach erosion along the Kerala Coast.

Tech. Report No. 29Centre for Earth Science StudiesAuthor: N. Kurian, T. Shahul Hameed, M. Baba. Study of the waves and their refraction in relation to beach erosion along the Kerala coast (). Centre for Earth Science Studies, Trivandrum Technical Report Number28 pp. Baba, M., Kurian, N.P., Thomas, K.V., Hameed, T.S.S., Kumar, M.P.

and Harish, C.M., by: Study of the waves and their refraction in relation to beach erosion along the Kerala coast (Interim Report for the year ).Cited by: 3. Study of the waves and their refraction in relation to beach erosion along the Kerala Coast, Tech.

Rep., CESS, No.3l, 21 pp. New trends in Ocean Wave Research in India, Mahasagar - Bull. The study covers the short- and long-term beach volume changes, shoreline changes, wave refraction pattern and nearshore wave energy distribution. In general there is a decrease of wave energy.

Study of the waves and their refraction in relation to beach erosion along the Kerala coast. Centre for Earth Science Studies, Tech. Rep. 28 pp. Baha, M., Joseph, P.S., Kurian, N.P., Thomas, K.V., Hameed, T.S.S., Prasannakumar, M. and Harish, C.M., by: 6. Decrease in wavelength and velocity, but increase in wave heigh; deep water wave energy translating into wave breakers, pounding the shore Wave refraction The bending of waves (convergence) toward the protruding areas (headlands) and the divergence of waves at the beach or embayment.

A study of wave refraction along the beaches between Tiruchendur and Kanyakumari has been made to investigate the changes that occur in the wave characteristics near the coast as deepwater waves of different periods approach the coast from various by: 3.

along the different stretches of the coast of Kerala. However, efforts to study Kerala coast as a whole combining both the theoretical model and comprehensive field observation have been lacking_ Hence the problem " Beach dynamics of Kerala coast in relation to land-sea interaction".

The study has been carried out for three selected locations with varying bottom slopes and sediment characteristics along this coast using a wave refraction model.

-from Authors View Show abstract. - the shoreline is the line that marks the contact between land and sea, whereas the shore is the area that extends between the lowest tide level and the highest elevation on land that is affected by storm waves - the coast extends inland from the shore as far as ocean-related features can be found, and the coastline marks the coast's seaward edge.

Study of waves and their refraction in relation to beach erosion along the Kerala coast (). Tech. Rep.Centre for Earth Science Egorov, E.M., On the forms of accretive beach related to continuous sediment movement. Doklady Akademii Nak., 80 (5) (in Russian).

Evans, O.F., Classification and origin of beach cusps. Erosion is one of the major coastal hazards along the Kerala coast for the past century due to which more than 50% of the coast was protected with artificial structures such as groins, seawall and.

Ocean & Shoreline Management U () A Study of Seasonal Longshore Transport Direction Through Grain-Size Trends: An Example from the Quilon Coast, Kerala, India T. Prakash & M. Prithviraj Marine Sciences Division, Centre for Earth Science Studies, PO BoxTrivandrumIndia (Received 15 January ; accepted 3 May ) ABSTRACT The longshore transport Cited by: Coastal erosion is the wearing away of land and removal of beach sediments by high winds, drainage, wave action, wave currents, and tidal currents.

Coastal morphodynamics studies the erosion and sediment redistribution in coastal areas. It is caused by corrosion, hydraulic action or abrasion.

ment is called longshore drift. The present study attempts to elucidate the distribution of wave energy, longshore currents, rip currents and intensity of erosion and accretion in relation to refraction pattern for waves approaching with different periods and from different directions, along the beaches around Cochin on the Kerala by: 1.

protection of Kerala coast by Joseph (), an analysis of the problem of beach erosion and its prevention by Menon () and a study on beach nourishment of Purakad beach by Mony and Nambiar ().

The seasonal variations ofsome ofthe beaches ofKerala were. The wearing away of cliff and beach material by the sea. Coastal erosion is the wearing away of the land by the sea often involves destructive waves wearing away the coast (though constructive waves also contribute to coastal erosion).

There are five main processes of coastal erosion. These are corrasion, abrasion, hydraulic action, attrition. through construction of wave refraction diagrams. Orientation of shoreline along the Kerala coast is in NNW -SSE direction and so waves approaching the coast between °and are ofgreat significance in the littoral processes along the shore under study.

Percentages of different periods and heights were calculated for each direction of. Fungal remains from Tertiary sediments of Kerala Basin, India Some studies on wave refraction in relation to beach erosion along the kerala coast samples from the shelf off north Kerala. Waves approaching a beach at an angle: A) cause sand to move along the beach: B) are refracted so that they become nearly parallel to the beach: C) cause a longshore current to develop: D) all of the above: 2: Wave base is the water depth where: A) deep water waves become shallow water waves: B) waves break: C) wave height is less than water.

Start studying Geology Terms Chapter Learn vocabulary, terms, and more with flashcards, games, and other study tools. the bending of waves (convergence) toward the protruding areas (headlands) and the divergence of waves at the beach or embayment. long term effect of wave refraction erosion more severe along the Lake Michigan.

Coastal Erosion. Sea Level Rise and Coastal Erosion. Sea level has risen by about m ( ft) since the peak of the last ice age ab years ago. The coast was about km (60 mi) farther offshore from Long Island at that time. Since then ice caps have shrunk, returning water to the sea and the seas have warmed and expanded.

To implement effective beach erosion control and coastal ecosystem protection strategies, coastal managers need information on long- and short-term changes taking place along the coast, including beach profiles, changes from erosion, and wetlands changes from inundation.

Topographic and bathymetric data can now be rapidly and accurately acquired at various spatial. In turn, wave refraction may be responsible for alteration of the bottom features by accumulation or removal of sediments and, in this manner, be an important factor in beach erosion.

In this report the role of wave refraction is first reviewed in the light of other processes affecting the transformation of waves in shallow by: Geomorphology - Sea Coast Erosion.

STUDY. PLAY. the movement of sediment along a beach due to waves and currents. Wave Refraction. when a wave approaches the coast at an angle, part of the wave moving 'faster' than another. By the time both parts of the wave catch up to each other, the wave is parallel to the shore.

Wave-cut cliff - a seaward facing cliff along a steep shoreline formed by wave erosion at its base and mass wasting Wave-cut platform - a bench in bedrock at sea level cut by wave erosion Marine terrace - a wave-cut platform that has been uplifted above sea level Sea stack - the result of wave refraction on a.

Probability distribution of shallow water wave heights, obtained from a pressure type recorder, are examined. Study of the waves and their refraction in relation to beach erosion along the Kerala coast.

Tech. Rep.Centre for Earth Science Studies. BLACk, K. Wave transmission over shallow reef (Field measurement and Cited by: The wave’s energy, or its ability to do work on a shoreline, is the same between orthogonals drawn at equally spaced intervals along the wave Waves in Shallow Water and Beach Erosion crest.

By tracing the orthogonals shoreward on the crests of successive waves of selected periods or lengths, we can determine how wave energy is con- centrated.

Beach profile studies have shown significant variation in the beach morphology. The study area has been categorized into five different zones in the GIS analysis based on the degree of coastal erosion and sediment dynamics namely (i) very high - Kalaignanapuram, (ii) high - Sippikulam (iii) medium - Periyasamypuram (iv) low - Vembar and Kallar Author: S.

Saravanan, N. Chandrasekar, M. Rajamanickam, C. Hentry, V. Joevivek. Beach Profile Studies near an Artificial Open-Coast Port along South Orissa, East Coast of India Pravakar Mishraf, P.K. MohantyJ, A.S.N. MurtyJ and T. Sugimotof tOcean Research Institute J Marine Science Department The University of Tokyo Berhampur University Tokyo -Japan Berhampur -India ABSTRACT.

is called wave refraction because waves bend or refract toward shore. When wave crests approach a beach at an angle, the breaking wave pushes the sand grains up the beach slope at an angle to the shore.

As the wave then drains back into the sea, the water moves directly down the beach slope per-pendicular to the water’s edge. The biggest factor affecting coastal erosion is the strength of the waves breaking along the coastline.

A wave’s strength is controlled by its fetch and the wind speed. Longer fetches & stronger winds create bigger, more powerful waves that have more erosive power. Coasts of erosion form as a result of high energy waves, large fetch, high exposure and limited are also associated with drift alligned coasts that are influenced by longshore drift.

This transfer of sediment along the coast limits the development of beaches and leads to greater cliff exposure, hence cliff retreat.

Study 92 Chapter 11 flashcards from Julie F. on StudyBlue. Coarse, loosely-packed materials = steeper slopes because most of the water from a wave percolates into the beach and the sediment it carries remains on the beach. Coastal erosion, which is the wearing away of coastal land or beaches, is mainly caused by the impact of waves along the shoreline.

This is accentuated during storms when waves are large and crash. Rivers oceans and coasts Wave refraction Consequences G Headland erosion V Wave from CIVE 2*** at Carleton University.

The sediment movement along the shoreline of study area is mainly governed by the forces associated with the incoming waves and the availability of sediments within the area.

The present investigation has been made as an attempt to appreciate the sediment movement in relation to wave activity and beach morphodynamics along the coast.The coast, also known as the coastline or seashore, is the area where land meets the sea or ocean, or a line that forms the boundary between the land and the ocean or a lake.

A precise line that can be called a coastline cannot be determined due to the coastline paradox. The term coastal zone is a region where interaction of the sea and land processes occurs.Question: What are two ways in which waves erode the land?

Erosion: Erosion is the movement of sediment and rocks from one area to another, and there are several mechanisms for erosion.