Assess the extent to which primary rather than secondary impacts are the more serious effects arising from volcanic eruptions. (30 marks)
Volcanoes are in fact important because without volcanoes the atmosphere wouldn’t have its oxygen rich properties. Many of years ago, Earth’s atmosphere was swarm with rock-forming minerals of the earth 's crust. During earlier volcanic eruptions many gasses enters into the earth atmosphere. Carbon dioxide, water vapor and many other gases
Volcanic eruptions result in climate change, danger to people, and can cause other natural disasters. Eruptions have major effects on the climate. The gases and particles from the eruption can shield the Earth’s atmosphere from solar
How volcanoes affect people and environments? A volcano is a mountain or hill having a crater or vent through which lava, rock fragments, hot vapor, and gas are in. Volcanoes can change the weather. They can cause rain, thunder and lightning. Volcanoes can also have long-term effects on the climate, making the world cooler.
Though volcanoes can be very harmful they also help the environment and its nature. According to Russel Mcdonaugh, author of the article, he states, “Once volcanic deposits have been broken down, they enrich the soil both by adding important nutrients for plants and by providing excellent drainage.” (60). By adding nutrients to the soil, the deposits of the eruptions strengthen the soil and causes it to have positive effects. Some of these positive effects include nurturing
Volcanic eruptions not only give burning lava to the environment but the eruptions also release sulfur into the air (Mattox). This may sound familiar as coal burning power plants
Analyse the factors that causes differences in the hazards posed by volcanoes around the world (40 marks)
Aerosols are particles in the atmosphere that affect reflectivity, which affect the amount of energy that enters Earth, ultimately affecting global temperature change. An example of this can be seen in volcanic eruptions. Volcanic particles that reach the upper atmosphere are able to reflect enough sunlight back to space, which can cool the surface of Earth by a few tenths of a degree for a few years (Hegerl, 2007).
A hazard is a situation that poses a level of threat tolife, health, property or environment. The level of hazard posed by different volcanoes can very greatly, from a weak eruption with minimal impact that causes little damage, to a voilent and life threatening explosion. Most of the sixty-plus volcanoes that erupt each year are low risk, however a combination of factors can cause a volcano to be a serious hazard. The factors causing these variations will be explained in this essay.
Introduction: Since the beginning of time, volcanoes have been wreaking havoc on the world, as we know it. Yet in the more recent times, there has been a great amount of debate regarding the effect of volcanic eruptions on world climate change. In this report, the effects of these volcanoes will be explored, particularly in regards to cooling and the depletion of the ozone.
Some of them will threaten not only natural environment but also human’s life. Firstly, it produced the pyroclastic flows which include volcanic ash, lava flows, hot rocks (USGS). In the class lecture, it states that this type of volcano can move a hundred miles away and the high temperature of lava can kill people near the eruption area. Secondly, when the small summit explosion happened, it created the “lahar” since it melted the snow and became the mudflow (Geology). Thirdly, the abundant volcanic ash will also disturb the normal aviation work. The tiny particle of the ash could get in the engine and damage the
Volcanoes are one of the most intimidating natural processes that occur on this planet. Usually they are associated with danger and chaos. Volcanoes are characterized by both their composition and eruption types. In this paper we will be exploring the similarities and differences between three infamous volcanoes, Mt. St. Helens, Mt. Kileaue, and the currently relevant Mt. Agung.
People can benefit greatly from volcanic eruptions in many ways. To illustrate, volcanoes have a variety of beneficial properties for soil. In most of lower Italy, the soil is rather meager, but in Naples, Italy, “[the] region includes Mount Vesuvius, which has experienced two major eruptions more than 10,000 years ago… [and t]he soil is so rich that farmers often plant different crops intermingled with each other to maximize the use of every square inch available” (McDonaugh 60, 61). Therefore, an abundance of crops can be grown easily and readily, and the demand for food would be met much more easily. Volcanoes can also draw in people, revealing a remarkable beauty in spite of its fiery temper. A tourist attraction in Mauna Loa, Hawaii Island
Volcanic ashes gathers on streets, lakes, all over, creating disturbances in transport and influencing the neighborhood condition. This hinders business, which in Patagonia for the most part resolves around tourism and agriculture.
The Earth has been experiencing a considerable amount of climate change for the last several decades. Natural factors that contribute to the climate system consist of: solar output, volcanic activity and earth’s orbit around the sun. The two factors relevant on timescales of contemporary climate exist in volcanic activity and changes in solar radiation. The earth’s energy balance primarily influences the amount of incoming energy from volcanic eruptions, which have a relatively short-term effect on climate. Changes in solar output have contributed greatly to climate trends over the past century. The effect of greenhouse gases in the atmosphere has been at least ten times that of changes in the Sun’s output and the ocean covers more than 70 percent of the earth’s surface, receiving twice the amount of earth’s radiation. Although the sun is the engine that drives all the weather, oceans and atmosphere control the sun 's energy along certain