Powerpoint click to download the ms powerpoint file 21. A volcanic hazard is the probability that a volcanic eruption or related geophysical event will occur in a given geographic area and within a specified window of time. The risk that can be associated with a volcanic hazard depends on the proximity and vulnerability of an asset or a population of people near to where a volcanic event might occur. Helens landslide release of pressure lateral blast pyroclastic flow down with the pull of gravity ash cloudvertical ash fall landslide gravitational force pulls unstable material down slope. It is one of the service agencies of the department of science and technology. This will surely be a good help for me and my learners on the opening of classes. Not only can powerful explosive eruptions drastically alter land and water for tens of kilometers around a volcano, but tiny liquid droplets of sulfuric acid erupted into the stratosphere can change.
Volcanic hazards and eruptions follow a sequence of events. How will melting of ice affect volcanic hazards in the. Using the information in the powerpoint, complete the following. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Volcanic hazards along the cascadia subduction zone.
Typically, a number of types of hazards will result from a volcanic eruption. This powerpoint presentation covers the basics of cascade volcanoes and volcanic hazards. To address the growing national risk from volcanic activity, the vhp must. A sheild volcano erupts quitely instead of explosively. Using pg 32 of geography environments, come up with definitions for each of the following active volcano. An erupting volcano can blast ash, lava, solid rocks and gases into the air, creating hazards that can kill people, disrupt air travel and destroy property many. Effects of volcanoes there are many different types of volcanic eruptions and associated activity. Using knowledge already learnt in this topic, plus the websites below, create a poster aimed at yr 78 students studying volcanoes about this sequence. Volcano hazards and preparedness newspapers in education. How are shield volcanoes formed magma from a shield volcano has a low viscosity, low silica content, and the lava is like a thin. This is a fully illustrated set of powerpoint slideshows that examine volcanic hazards including pyroclastic flows and tsunami. Shield volcanoes usually erupt as more of a slow, steady flow of lava.
Free download earthquakes and volcanoes powerpoint. A free powerpoint ppt presentation displayed as a flash slide show on id. Volcanic explosivity index vei historic eruptions vei is primarily used to estimate the relative size of an explosive eruption in the last 10,000 yrs 4 vei 7 eruptions 39 vei 6 eruptions 84 vei 5 eruptions 278 vei 4 eruptions 868 vei 3 eruptions 3477 vei 2 eruptions volcanic hazards lava flows. The volcano includes the surrounding cone of erupted material magma chamber. Volcanic dust blew into the upper atmosphere affecting incoming solar radiation and the earths weather for several years. The largescale fissure release of fluorinecontaining gases over 8 months at laki, iceland, in 1783.
Powerpoint click to download the ms powerpoint file 39 mbytes pdf click to view or download the presentation in pdf 28 mbytes ht ml cl ick to view the presentation in html format. This helps you give your presentation on earthquakes and volcanoes in a conference, a school lecture, a business proposal, in a webinar and business and professional representations. Earthquakes triggered by silent slip events on kilauea volcano. This course, volcanoes, earthquakes and tsunamis, discusses the various hazards posed by volcanic eruptions, illustrated by examples from recent. Volcanic eruption a volcano is a mountain where lava hot, liquid rock comes from a magma chamber under the ground. A volcano is a vent or chimney that connects molten rock magma from within the earths crust to the earths surface. There is growing evidence that past changes in the thickness of ice covering volcanoes have affected their eruptive activity.
Hi good dayhope i can ask for a copy of your presentation. A series of large tsunami waves generated by the main explosion, some reaching a height of nearly 40 meters more than 120 feet above sea level, killed more than 36,000 people in the coastal towns and villages along the. Describe major volcanic hazards and their potential effects. Volcanic ashfall resulting from explosivestyle eruptions. Volcanic eruptions and hazards authorstream presentation. Volcanic monitoring is explained fully, and there are case studies of volcanoes. Cascade volcanos can produce lahars or debris flows mixed with water, pyroclastic flows of hot gasses and rocks, and ash fall that can range from a light dusting near the volcano to very heavy deposits that can bury soils and rarely collapse structures under heavy ash fall and pose a long distance threat. The presentation was developed by beth prattsitaula and jenda johnson with. They did not damage the towns several kilometres away. For making a presentation about any disaster, you can use these free disaster powerpoint templates.
Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. There are examples and analyses of the various hazards of vulcanicity. Ppt volcanic hazards powerpoint presentation free to. Volcanic eruptions are common in iceland with individual volcanic events occurring on average at a 34 year interval, with small eruptions risks, and disasters provides you with the latest scientific developments in volcano and volcanic research, including causality, impacts, preparedness, risk analysis, planning, response, recovery, and the economics of loss and remediation. Characteristics, distribution, and hazards ppt 81 mb. Volcanic ash consists of fragments of pulverized rock, minerals and volcanic glass, created during volcanic eruptions also refer to all explosive eruption products 6. Walker gpl 1974 volcanic hazards and the prediction of volcanic eruptions. A disaster strikes with no mercy and mostly without warning. Dating of icelandic lavas has shown that the rate of volcanic activity in iceland accelerated by a factor of 3050 following the last deglaciation at approximately 12 ka maclennan et al. It takes a geoscientific approach to the topic while integrating the social and economic issues related to volcanoes and volcanic hazards. Volcano hazard maps pacific northwest seismic network. Whether you want to discuss a historical disaster event, need to create. Created by grade 11 students of phinmaupang as a requirement in disaster risk reduction.
The final lesson has no presentation and is a synthesis of the entire unit. In addition, factors that affect the mode of eruption tectonic setting, viscosity, etc. You will need to download all files to the same folder on your. Two years earlier, lake monoun, 60 miles to the southeast, released a heavy cloud of toxic gas, killing 37 people. Analyses of local and global eruption databases have. Read through and have a go at the interactive tasks in the powerpoint below. Disaster preparedness volcanic eruption ppt images all. Hot, molten rock magma is buoyant has a lower density than the surrounding rocks and will. Cascade volcanoes and volcanic hazards powerpoint presentation. Content introduction process of volcanic eruption types of volcanic eruption reasons of volcanic eruption effects of volcanic eruption top 10 deadliest volcanic eruption safety tips 3. Download some of our frequently asked questions and answers pertaining to volcanoes, their hazards, how we monitor them, and what its like to be a volcanologist. Use the volcanoes powerpoint presentation in conjunction with the lesson plan. Volcanic ash, the shattered remnants of volcanic rock, rises into the atmosphere, where it is a hazard to aircraft and affects large areas downwind when it falls back to earth.
Powerpoint is the worlds most popular presentation software which can let you create professional earthquakes and volcanoes powerpoint presentation easily and in no time. Stunning powerpoint template with a stream of lava going down the mountainside will fit presentations on catastrophe, disasters, eruptions, volcanology, etc. Preparing schools and communities for future volcanic eruptions will keep everyone safe. Earthquakes, storms, volcanic eruptions, floods, famine, war, accidents and sinkholes are just some of many disaster types that can strike with dire consequences. Volcanic eruptions global disaster management libs. Volcano safety tips volcano preparedness red cross. Each hazard poses different risks affecting different areas. The lessons, and their descriptions, are found in powerpoint files with the following titles and in the order they are taught lesson 1. Understanding volcano hazards and preventing volcanic disasters. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Volcanos present a variety of hazards that should be considered when assessing risk. Kirianov encyclopedia of life support systems eolss of all the volcanic hazards, gas releases are among the most important. Download the geologic hazards at volcanoes poster at. The eruptions were explosive, but relatively small and restricted to the summit and upper flanks of the volcano.
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