Project on coastal erosion monitoring on the Sierra Leone coast

Project on coastal erosion monitoring on the Sierra Leone coast by Reynold G. Johnson Download PDF EPUB FB2

The Sierra Leone coast were elaborated on, as seen bellow: Causes of erosion along the coast of Sierra Leone: (1) Gold and Diamond Mining along river channel (Alluvial Method) Sierra Leone is a country which has gold and diamonds, along flowing streams and rivers.

Channel gravel mining (Alluvial method) activities by the locals, involve gravel. Over 2 million people along coastal areas in Sierra Leone are expected to be at risk from predicted sea level rise. In addition to loss of properties and beaches, the consequences of coastal erosion and sea level rise include population displacements, flooding and saline intrusion, and threats to coastal aquifers, fresh water resources and agricultural water resources, undermining subsistence.

Coastal erosion is a major environmental problem throughout West Africa, but some stretches of the coastline are more severely affected than others. In northwestern Guinea Bissau, coastal zones have eroded rapidly over the past few decades.

In Varela, the shoreline has retreated by up to m inland in the past 40 years (see inset above). Sierra Leone’s coastal and marine biodiversity faces many threats ranging from habitat destruction, climate change (coastal erosion, flooding and droughts), hunting, collection of sea turtle eggs, to land use change as a result of agriculture and settlement and fish stock overexploitation.

The coastal areas of West Africa is home to 31% of the West African population and produces 56% of the sub region’s GDP. However, today, countries are facing increasing risks of coastal erosion, flooding, salinization of land and coastal waters, as well as depletion of fish stocks, all manifestations that threaten their people and their economic livelihood.

Ye Yincan et al, in Marine Geo-Hazards in China, Basic Concept of Coastal Erosion. Coastal erosion is a result of human activities and natural environment changes making the coastal dynamic action (wave, current, wind) lose balance in the coastal process, and the long-term loss of sediments of coastal zone results in the destruction process of coastline retreat and beach erosion.

forests and trees provide some coastal protection and that the clearing of coastal forests and trees has increased the vulnerability of coasts to erosion (Figure ) — such as in Viet Nam (Mazda et al., ; Cat et al., ), Malaysia (Othman, ), Indonesia (Bird and Ongkosongo, ; Nurkin, ; Tjardana, ), Sri Lanka (Samarayanke, ), India (Malini and Rao, ;File Size: KB.

Coastal erosion is the loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of waves, currents, tides, wind-driven water, waterborne ice, or other impacts of storms.

The landward retreat of the shoreline can measured and described over a temporal scale of tides, seasons, and other short-term cyclic processes. coastal erosion - and the coast was divided into several distinct monitoring is the mantra and this should force decision makers to Williams, A., et al., The management of coastal erosion.

The Crown Estates are investigating a ‘Sandscape’ project based on the Dutch Sand Engine principle (where 21 million m 3 of sand deposited on the Netherlands coast is allowed to redistribute naturally) at several locations, e.g. north Norfolk, Suffolk, Lincolnshire, north-east Wales, as well as other pockets in NW England and the south Cited by:   Coastal erosion at Skipsea, East Yorkshire, UK.

Matthew J Thomas/Shutterstock February 7, Rising seas: to keep humans safe, let nature shape the coast. The Great Ocean Road coast is constantly changing. While Victoria has a long history of weather variability such as storms, droughts and floods, climate change is projected to increase risks to coastal environments through drivers such as sea-level rise, change in wave-direction and increases in swell energy and storm tide events.

These drivers affect coastal. Ill-planned coastal defence constructions may aggravate erosion by trapping sediments. Climate change aggravates coastal erosion even more: sea level rise, increased storminess, changes in prevalent wind directions and higher waves put Europe's coast under additional pressure.

To tackle coastal erosion an integrated approach is needed. Required Reading. Go to the Module 7 Roadmap, and read the following sections on the Conscience website, making notes as you go, with a focus on the details of the definition of coastal erosion and the processes at work in the coastal (or littoral) cell concept.

Interplay of sediment, wind, and water; The coastal cell as a unifying concept. Coastal ClassificationCoastal Classification • A Primary Coast is a coast which is essentially in the same condition when sea level stabilized after the last ice age.

• Terrestrial (land) influences dominate Primary Coast o Land erosion coast o Volcanic coast o Ice coast I. Primary Coast 6. Secondary coastII. Coastal Erosion: Pantai Morib. Coastal Management. Conclusion; Bibliography; Conclusion. To summarise, Pantai Morib developers need to rebuild or repair their sea defenses to ensure a safer environment.

The coast should be kept clean always, this means the organization that are responsible for the cleanliness of the beach need to clean the. This video explains the processes of coastal erosion as well as looking at the a feature/landform of coastal erosion i.e.

Cliffs. Watch the video, take notes, listen in for key tips on how to. Stephen Escarzaga hikes along the coast of the Chukchi sea.

He is part of the Barrow Area Information Database crew, project that aims to protect Alaska’s coastal areas. change suggest that the scale of coastal erosion will increase and therefore there will be knock-on costs for both protection and repair. Tackling coastal erosion at its roots There is increasing consensus among coastal practitioners and scientists that we should address the coastal erosion problem at File Size: 2MB.

(shelved 1 time as coastal-erosion-children) avg rating — 3 ratings — published Want to Read saving. The NSW coast has a long history of experiencing coastal erosion events dating back to Single storm events have caused coastal erosion, such as that associated with East Coast Low storms in and that damaged beachfront properties in Sydney.UAB - G.I.M.

Coastal Erosion Indicators study Therefore the EUROSION consortium has asked GIM to carry out an assessment of indicators which are relevant for the coastal zone to fill this existing assessment gap.

The aim of the indicators is that they 1. can be provided in the framework of EUROSION, i.e. are linked to coastal erosion issues, 2.Coastal erosion mitigation programs must be formulated in a complex policy arena in which federal, state, county, and municipal governments share jurisdictions over the coast.

Consequently, each length of coast is subject to multiple layers of public authority.