Thursday, December 17, 2015

The Bahamas Final Hazards Report

The Bahamas Final Hazards Report

Hurricanes
    Hurricanes in the Bahamas do not happen as often, but when they do it causes significant amount of damage. Hurricanes only form over warm ocean water of 80°F or warmer. The atmosphere (the air) must cool off very quickly the higher you go. Also, the wind must be blowing in the same direction and at the same speed to force air upward from the ocean surface. Winds flow outward above the storm allowing the air below to rise. According to past records, hurricanes do not occur in the Bahamas as frequently as they do along the east coast of the US mainland.  In hopes of preventing this damage, officials have constructed sea walls in hopes of preventing huge damage on the roads due to roads being too close to the shorelines. The Bahamas has recently experienced hurricane Joaquin which has destroyed several islands in the southern area. This has caused power outage, water shortage due to contamination. Joaquin has caused drastic flooding and this massive storm has left many residents hungry, homeless and lack of clean water. This is majority of what was available in regards to extreme weather. This should be addressed because of the significant damage that Hurricane Joaquin has done.

Earthquakes

     The Bahamas experienced earthquakes in the Southern part of the island country. They have experienced minor exposures to the south side of the country due to the earthquakes from the Caribbean. Large earthquakes are caused in the southern coast of Cuba and the northern part of Haiti. As a result, this caused significant shaking in the southern part of the island. An earthquake is the sudden release of stored energy in the earth's crust; most earthquakes occur along a fracture within the earth, called a fault. The shaking caused by this sudden shift is often very small, but occasionally large earthquakes produce very strong ground shaking. It is this strong shaking and its consequences – ground failure, landslides, liquefaction – that results in damaged buildings and structures and often results in negative impacts on the economy.

    Eleuthera Governor's Harbor is the perfect location to stay in the Bahamas. Geographically in the center of the island, you are close enough for day trips to the southern and northern points. Eleuthera is an island of casual sophistication, housing isolated communities, well-developed resorts, rocky bluffs, low-lying wetlands and massive coral reefs that create magnificent backdrops. My recommendations would be increasing awareness of these hazards. If money wasn’t an option. I would like to store hazard devices inside of each house and other areas around the island. Although there are radios and media that are available, there are not always available to those around the island. In addition, in case of an emergency I will create available housing for those who are temporarily away from their homes/work. Even for those who do not have a shelter. As long as there are available spaces available to anyone in need. These shelters/areas will be mainly located in the southern areas of the island. Most of the natural hazards occur on the southern part and on the coastal island depending on the hazard.

 References




Sunday, November 22, 2015

Coastal Hazards

Hurricanes in the Bahamas do not happen as often, but when they do it causes significant amount of damage. In hopes of preventing this damage, officials have constructed sea walls in hopes of preventing huge damage on the roads due to roads being too close to the shorelines. The Bahamas shoreline erosion is due to number of factors which may include offshore dredging, stealing sand from beaches and sand dunes, construction on the beach or immediately offshore, or vegetation removal. 

As far as residents knowing about this, they hold meetings that discuss the exhibits of how they want to make sure they are away. However, building these sea  walls takes sufficient time and effort. Sometimes the walls may collapse due to poor structure or environmental abuse such as heavy waves, walls collapsing, and wall end failure. As we would assume for quality sea walls it is more on the pricer side than affordable depending on the island's economic status and views regarding building stable sea walls. 

http://henge.bio.miami.edu/coastalecology/windermere/Sea_walls_2006_condensed%5B1%5D.pdf



Sunday, November 1, 2015

Extreme Weather

The Bahamas has recently experienced hurricane Joaquin which has destroyed several islands in the southern area. This has caused power outage, water shortage due to contamination,  Joaquin has caused drastic flooding and this massive storm has left many residents hungry, homeless and lack of clean water. This storm has also contributed to a missing ship which was recently found. This is majority of what was available in regards to extreme weather.

http://www.weather.com/safety/hurricane/news/hurricane-joaquin-bahamas-impacts

Friday, October 23, 2015

Mass Wasting

Landslides are often triggered by earthquakes but can also be set off by volcanic eruptions, heavy rains, groundwater rise, undercutting by streams, and other mechanisms; consequently, they occur more widely than earthquakes.

The best strategies for landslide hazards are to avoid construction in hazardous areas and to avoid land uses that provoke mass movement. To build these strategies into development planning requires information on the likely occurrence of landslides. It is suggested that this information should be compiled only for areas of intensive present or planned land use. 

Lastly, the best way to be aware of landslide potential are past landslides. The location, size, and structure of past landslides can be interpreted from remotely-sensed imagery. 

According to Organization of American States, development activities (e.g., the conversion of forest to grasslands or crops, which increases soil moisture) can increase susceptibility to landslides, and the map units of natural characteristics can be adjusted to show the effects of these human activities (1987).  This is characterized as landslide potential, to provide the basis for preparing a landslide hazard maps. 


https://www.oas.org/dsd/publications/Unit/oea54e/ch11.htm

Saturday, September 26, 2015

Volcanoes

The Bahamas doesn't have any volcanoes. The nearest volcano is in St. Lucia which is approximately 2,155 km from the Bahamas to St. Lucia. Soufriere Volcano in St. Lucia is considered to be dormant and it last rerupted was in the 18th century. Tourists were allowed to walk on these thin layers but an incident happened, so they are only allowed to stay behind the fence. 


http://www.rainforestadventure.com/st-lucia/natural-attractions/sulphur-springs/


Sunday, September 20, 2015

Tsunamis


  • The Bahamas doesn't really experience tsunamis but in other regions close to the Bahamas begin to run and never looked back.It may take minutes or hours for tsunami waves to impact the coasts of The Bahamas following an earthquake in the region or far out on the other side of the Atlantic Ocean. 

    It is suggested that if one feels the ground shaking it increases, the should get off of the area. it also mentioned that they should be more careful when going inside the house, the officials says they will be okay to enter once everything is cleared. Lastly, distance source tsunami events, the Meteorology Department and NEMA will inform citizens and visitors to evacuate by making an announcement on all local radio and cable broadcasts. There are also shelters available for those who will need them.

    http://www.bahamas.gov.bs/wps/wcm/connect/fc4b163c-c9eb-46ea-b6c2-648518d0eb41/NEMA_Safety+Tips+for+Tsunamis.pdf?MOD=AJPERES

Thursday, September 10, 2015

Earthquakes

The Bahamas experienced earthquakes in the Southern part of the island country. They have experienced minor exposures to the south side of the country due to the earthquakes from the Caribbean. Large earthquakes are caused in the southern coast of Cuba and the northern part of Haiti. As a result, this caused significant shaking in the southern part of the island. 

Sources: 

http://www.ccrif.org/sites/default/files/publications/Bahamas_CountryRiskProfile_2013.pdf

Sunday, September 6, 2015

Hazards, Disasters, Catastrophes

Hazards: natural events that pose a danger and high awareness to humans well being and surrounding environments.

Disasters: dangerous event(s) that occur over a certain period that includes the following:
kills more than 10 people, injures over 100 people, called as being a state and is seen as an
international help being provided.

Catastrophes: a severe disaster that is costly of time and money to repair.

Bahamas Plate Boundaries

The Bahamas plate is located near the North American plate. The Northern American plate covers majority of the Bahamas, part of Iceland and Cuba. The Bahamas experiences tropical storms which can cause severe flooding and extensive wind damage. These convergent boundaries are formed when two plates moving towards each others as they collide. In addition to this, the combination of rain, high winds, debris/trash and tidal streams help influence storms and hurricanes.


https://www.floodsmart.gov/floodsmart/pages/flooding_flood_risks/tropical_storms_hurricanes.jsp
http://www.geography.learnontheinternet.co.uk/gcse/tropical.html
https://www.cia.gov/library/publications/the-world-factbook/geos/bf.html