More than 150 eruptions, most of which have produced fluid basaltic lava flows within the caldera, have been documented since the 17th century. The volcano is monitored by the Piton de la Fournaise Volcano Observatory, one of several operated by the Institut de Physique du Globe de Paris. Map Source: Observatoire Volcanologique du Piton de la Fournaise (OVPDLF) Piton de la Fournaise Information from the Global Volcanism Program SANGAY Ecuador 2.002°S, 78.341°W; summit elev. 5230 m Based on analysis of satellite imagery, information from the Guayaquil MWO, and pilot reports, the Washington VAAC reported that a minor ash plume rose from Sangay on 24 September and drifted WNW. Geologic Summary.
This includes San Andreas Fault where a network of active faults underlies the LA region and San Francisco Bay Area. Secondly during El Nino years (every 4-7 years and lasting up to 2 years) there is a shift in the temperature of the Pacific Ocean resulting in warmer waters along the coast of South America. The low pressure produced
[1] By the morning of October 15, the wave began to regain convection and eventually spawned a new area of low pressure roughly 475 mi (765 km) south-southwest of Puerto Ángel, Mexico. [2] By the afternoon, the NHC reported that the system had become increasingly organized and was likely to develop into a tropical depression later that day. [3] Around 11:00 am PDT (1800 UTC), the NHC declared that the low had developed into a tropical depression, the 20th of the 2009 Pacific hurricane season. [1][4] The storm featured well-developed outflow in all directions. Environmental conditions consisting of low wind shear, high moisture content and above average sea surface temperatures in the path of the system were exceptionally favorable for rapid development.
Mt. Saint Helens is, located in southern located in southwestern Washington about 50 miles northeast of Portland, Oregon, is one of the several lofty volcano’s that dominate the Cascade Range of the Pacific Northwest; the range extends from Mt. Garibaldi in British Columbia, Canada, to Lassen Peak in northern California. Geologists call Mt. Saint Helen a composite volcano (or stratovolcano), a term for steep sided, often symmetrical cones constructed of alternating layers of lava flows, ash and other volcanic debris.
Discuss the impacts of storm events in the British Isles and evaluate responses the responses to them. (40 Marks) Storm events in the British Isles are caused by depressions which form out in the Atlantic Ocean and are brought to us mainly by the tropical maritime air mass moving north-east over the British Isles. A depression is a low pressure weather system formed where two different air masses meet along the polar front, this occurs rapidly as they are driven by prevailing westerly wind. They appear as masses of swirling clouds when viewed on satellite images, subsequently due to Coriolis effect resulting in an anticlockwise rotation in the northern hemisphere. The associated air masses of storms within the British Isles are Polar maritime and Tropical maritime.
With a severe earthquake the county could be at risk for a Tsunami. Severe weather and flooding also presents a challenge in this area as annual precipitation reaches an average of 36 inches, and low-lying areas are susceptible to flooding (WCDEM, 2003 & Whatcom County,
The Sierra Nevada create uplift of moist oceanic air masses and it rains. Much of the water reaches the San Joaquin valley but by the time the storms reach the eastern Sierra and Owens Valley, most of the water has been wrung from the clouds. The White and Inyo mountains, only twenty five miles east of the Sierra crest, are semi-arid. They suck the remaining water from the skies and by the time the air reaches the Saline and Death Valleys, it is bone dry. Such weather patterns have a great influence on the surface geology as well: erosion, deposition and chemical alternation take place rapidly in many parts of
CNN did mention that Hermine could dump 4 to 8 inches of rain over northeastern Mexico and south Texas and as much as 12 inches in isolated areas, with the potential for flooding and mudslides, especially in northeastern Mexico. In addition, CNN also states that a storm surge will raise water levels by as much as 2 to 4 feet along the immediate coast near and to the north of where the center makes landfall. Fox News stated in their report that heavy rain is predicted with northeastern Mexico into south Texas getting 4 to 8 inches with as much as a foot in some places. MSNBC reported that officials are worried about flooding because the ground is already saturated from earlier rains. Some areas could get up to 12 inches of rain.
The primary effected area would be the damage of infrastructure, loss of power, fires and other potentially catastrophic hazards. Much of San Diego is located in low lying valleys and in a densely populated central business district, because of the strong concentration of people damage and loss of life from collapsed infrastructure and debris would be great. According to (Guzzetti& Carrara 1993 ) It is the location to human population that is key distinguishing feature of population risk .Furthermore much of the secondary effects like the loss/damage to property can be severe, according to (californiagreensolutions.com) in the past 26 years an accumulated amount of 19.43 billion dollars of damage has been attributed to catastrophes, and 19.43 billion has been related to earthquake damage. Conclusion Through my findings and research I have found that the two most common natural disasters that San Diego and its outlying areas are susceptible to are wildfires and earthquakes. Although the frequencies for earthquakes are relatively low the possible of catastrophic damage from one is a major possibility during the next 20 years.
Oklahoma, Kansas, the Northern Texas, and the New Mexico) which experienced severe soil erosion caused by the effect of windstorms in the 1930s. Lassieur (2009) noted that the term has its origin from WW I, during which the initially known grasslands of the area were converted into agricultural fields. The area had experience dry climates leading to severe drought. Together with the effect of over-cultivation, which occurred in the early parts of 1930’s, the land in the Great Plains ware left bare? This condition made the soil to be more prone to the heavy winds, which blew the loose topsoil in what was described as the black blizzards.