4 Benefits from Improved Earthquake Hazard Assessment and ... Why Monitor Earthquakes? - Seismology Research Centre These maps must be regularly updated based on new methods that reflect the latest earthquake catalogues and recorded data. Seismograph networks supply earthquake parameter and waveform data that are essential for the real-time evaluation of tectonic activity for public safety (e.g., volcanic eruptions, tsunamis, earthquake mainshocks and aftershocks), the development of earthquake hazard maps and seismic design criteria used in building codes and land-use planning . Earthquake Hazards of The Bay Area Today - USGS More mitigation can reduce losses in possible future disasters, at increased cost. Earthquake FAQs - CUSEC The only solution to minimise the loss of lives and properties is the effective preparedness against the earthquake. The figure above shows how an earthquake wave going through solid bedrock has . What's In Activity 1. This is attributed mainly to the rough assumptions incorporated in the models because earthquakes are both rare and destructive phenomena. Most of the hazards to people come from man-made structures themselves and the shaking they receive from the earthquake. Earthquake Hazards. Risk Assessment and Hazard Mapping - World Bank 1. Why recent large earthquakes caused shaking stronger than shown on earthquake hazard maps for common return periods is under debate. Why earthquake hazard maps often fail and what to do about ... Such maps are often used to prepare for earthquakes, notably in developing codes for earthquake-resistant construction. Why is hazard map important? Hazard maps indicate the extent of expected risk areas, and can be combined with disaster management information such as evacuation sites, evacuation routes, and so forth. Why is hazard mapping important? - AnswersToAll More useful are the estimates of the likely amount of ground shaking that can be expected, contained in the National Seismic Hazard maps. Purposes of Earthquake Instrumentation. Based on such a map, if you were living in the same house for 50 years, and that house was in a zone labeled "5% g", then there would be 1 chance in 10 that (at some point during those 50 years . No extant method, including PSHA, produces reliable estimates of seismic hazard. Why are earthquake hazard maps important? Hazard maps indicate the extent of expected risk areas, and can be combined with disaster management information such as evacuation sites, evacuation routes, and so forth. 6, pages 9 through 12 for examples of what a hazard map looks like.) Explanations include: (1) Current probabilistic seismic hazard . Step 3: Rate each hazard on a scale of 1 to 4. II. Group of answer choices. The maps show ground motions that have a specified annual probability of being exceeded—important information used for engineering buildings to withstand the ground motions expected over their design lifetimes. Step 2: Identify the hazards in each area of the facility using a color-coded circle on the map. Designed for the original ShakeOut in 2008, the ShakeOut Scenario is a detailed picture of a magnitude 7.8 earthquake along the southern San Andreas fault. As we have discussed, a geologic hazard, is the potential for loss or damage. What are the most dangerous geologic hazards? ACTIVITIES_Earthquake & Tsunami Earthquake Hazard Maps & Liquefaction RESOURCES Increasing ground shaking Why does ground shaking from an earthquake change so much with location? Ground Rupture - Deformation on the ground that marks the intersection of the with the earth's surface. PHIVOLCS takes the necessary steps to continuously improve the accuracy of hazards information reflected on each map generated. . Why are earthquake hazard maps important? a. they provide critical information necessary to properly design critical infrastructure b. they give us the date and time of the next major earthquake c. they give us the exact location where the next major earthquake is going to occur 2015 National Building Code of Canada seismic hazard maps. The State of Nevada is located in "earthquake country.". An earthquake of low magnitude 2.1 struck near Delhi on Monday as mild tremors hit the national capital. White _____10. A University of Missouri scientist and his colleagues recently studied the reasons for the maps' failure to forecast these quakes. Why is hazard mapping important? Once data about an area have been gathered, maps that show levels of risk for an area can be produced. The real dangers to people are being crushed in a collapsing building, drowning in a flood caused by a broken dam or levee, getting buried under a landslide, or being burned in a fire. Effects: Fissuring, displacement of the ground due to movement of the fault. Hazard maps indicate the extent of expected risk areas, and can be combined with disaster management information such as evacuation The type of hazard depicted in the map is Earthquake hazard because its features tectonic movement , trench and fault lines. hazard maps that would assist engineers in designing buildings that will resist earthquake strong ground shaking. Earthquake Drill Procedures • Once the drill is announced, all teachers and students will conduct the DROP Procedure (duck, cover and hold). Earthquake and tsunami simulation and hazard mapping Hazard maps provide important information to help people understand the risks of natural hazards and to help mitigate disasters. Earthquake hazard maps use assumptions about where, when, and how big future earthquakes will be to predict the level of shaking. They are typically created for natural hazards, such as earthquakes, volcanoes, landslides, flooding and tsunamis.Hazard maps help prevent serious damage and deaths. Simplified seismic hazard map of Canada, the provinces and territories. (See Factsheets 3 and 4 on pages 6 and 7.) Effect. Before an Earthquake. The WA partners are the Department of Fire and Emergency Services (DFES), Main Roads WA, Western Power and Water Corporation. 3. Hazard maps should be designed to guide and facilitate prompt evacuation. Vulnerability of structures - prevent collapse and minimise structural damage (the task of an earthquake engineer).. Risk - alerts, warnings and alarms for preparation and emergency response (the tasks of management and operating . 3 . Earthquake engineering is a multi-phased process that ranges from the description of earthquake sources, to characterization of site effects and structural response, and to description of measures of seismic protection. The map showing all earthquakes recorded in Maine shows a widely scattered pattern. they give us the date and time of the next major earthquake. Earthquake Hazards in the United States . Using the map on figure 6.3, decide which statement tells a fact. A hazard map is a map that highlights areas that are affected by or are vulnerable to a particular hazard. The hazard that are related to earthquake includes building and road collapse, Landslid, Tsunamis etc It is very unsafe because the tectonic activities/ seismic activity in the area is high. Because earthquake hazard maps affect millions of people, it is important to examine how the earthquake alert levels are set and how much confidence we have in them. a fault data set, an earthquake catalogue and a earthquake hazard map for a return period of 475 years for Colombia. Why earthquake risk assessments are important! Make a Ready kit for at least three days of self-sufficiency. Publisher: PEARSON. This model USGS earthquake hazard map depicts the potential shaking hazard from future earthquakes. family plan for and survive a major earthquake. the emergency department building within a hospital complex, or a bridge on a major highway). It lies within the Basin and Range Province, one of the most seismically active regions in the United States. The map above (Fig. The maps are made by considering what we currently know about: Past faults and earthquakes The behavior of seismic waves as they travel through different parts of the U.S. crust The near-surface site conditions at specific locations of interest Hazard maps can be used for land-use planning, mitigation, and emergency response. Earthquake hazard has been largely ignored for most of Australia's settled history, resulting in a significant legacy of vulnerable infrastructure, and this project is examining the implications of this. Each hazard poses different risks affecting different areas. Uses. shear walls - a spine of strength. The type of hazard depends on the strength of seismic activity, along with such factors as local topographic and built features, subsurface geology and groundwater. 1 The Study Of Minerals 2 Rocks And The Rock Cycle 3 Plate Tectonics 4 Earthquakes And Earth's Interior 5 Volcanism And Volcanic Hazards 6 Geologic Maps, Block Diagrams, And Rock Structures 7 Aerial Photographs, Satellite . Hazard - study of earthquakes and their effects, where they occur, how big and how often (the task of a seismologist).. Very Important Partners; Community Development. Step 3: Rate each hazard on a scale of 1 to 4. Why are earthquake hazard maps important? These scenarios were selected to represent reasonable estimates of the most serious earthquake . Ground Shaking. First author of the study was Seth Stein of Northwestern University. However, the risk can vary related to population and infrastructure, as well as other factors, of the place . Earthquake Hazards refer to earthquake agents which have the potential to cause harm to a vulnerable targets which can either be humans, animals or even your environment. Lake Oswego Earthquake Hazards Map. Step 4: Label each hazard with a name or brief . This report finds that, whilst hazard maps in South East Asia are not always easily available or made using probabilistic models, the majority of hazards in the majority of countries have been mapped. Building; Code Enforcement; Planning; Tree Protection & Removal; . They are typically made for natural hazards such as earthquake ground motion, flooding, landslides, liquefaction, and tsunami. Highest Hazard Lowest Hazard . Maps View earthquake hazards from across the United States. The 2018 National Seismic Hazard Map of Australia is shown in Figure 1. • Primary effects are permanent features an earthquake can bring out. Developing better hazard maps and alerting people to their limitations could . The effects of an earthquake can be classified as primary or secondary. If there is no hazard map available in your selected province, it's either there is no hazard specific to the area or mapping is still ongoing. The best way to do this is to look at how maps change based on what mapmakers assume. A geological hazard map is a map indicating the areas that are vulnerable to hazards caused by earthquakes, volcanic eruptions, and landslides. expand_less. 2. This is the key difference between eruptions and the other principal natural hazards like floods and earthquakes. Develop a family communications plan. 2014 United States Geological Survey Seismic Hazard Map. This procedure consists of everyone dropping to their knees, taking cover under a table or desk, protecting their head with arms if not under a table or desk, and face . The study, "Why earthquake hazard maps often fail and what to do about it," was published by the journal Tectonophysics. Hazard Calculators - Determine seismic hazard at your site. This doesn't mean that we don't have earthquakes in New England. base isolation. As a result, key aspects of hazard maps often depend on poorly constrained parameters, whose values are chosen based on the mapmakers' preconceptions. The National Seismic Hazard Maps (NSHM) (and the hazard model from which they are derived) are first and foremost a suite of products aimed at improving earthquake-resilient construction in the United States. This situation will improve at best slowly, owing to our limited understanding of earthquake processes. The Survey has developed several types of hazard maps for different types of earthquake- and fault-related hazards: The Earthquake Hazards Scenario Catalog contains loss estimates for a suite of earthquake scenarios. (See Factsheets 3 and 4 on pages 6 and 7.) The U.S. Geological Survey maps of seismic hazard show that mapped faults act as earthquake sources in the western U.S., but not in the central or eastern U.S. Every part of California has some level of earthquake risk, but some of them can be mitigated. If an earthquake generates a large enough shaking intensity, structures . Seismic-risk studies will become more important as a statewide earthquake hazard mitigation strategy is developed. This booklet is designed to help you and your . Develop and publish hazard maps. earthquakes (HERP, 2005), it was important in the ground-motion hazard assessment to include the possibility that M8-9 earthquakes could rupture tobeneath the coast,asthe 2011 M9 Tohokuearthquake However, in the case of the Great East Japan Earthquake (GEJE), these hazard maps, created before the event, may have given people a false sense of security by underestimating the disaster's potential impact. In the case of occupational . Earthquake hazard is the likelihood of a certain level of shaking—also known as Peak Ground Acceleration —that may occur from an earthquake in a particular area. In 2007, earthquake scientists led by the USGS, CGS, and SCEC estimated that there is a 63% probability of a magnitude 6.7 or greater earthquake in the Bay Area in the next 30 years. For example, many earthquake hazard maps show contours of the percentage of the force of gravity that has a 10% chance of being exceeded in 50 years. While designing a project in an area of high or medium earthquake hazard, it is important to set standards for the design of each structure which match the importance of the structure's function (e.g. For these and other purposes earthquake hazard maps are crucial. Since the inception of PSHA by Cornell (1968) and McGuire (1976) , several 67 critical developments can be identified such as the complex representation of the earthquake source, the derivation of new models to describe the Depending on where you are some of the most threatening hazards include pyroclastic falls, pyroclastic flows and surges, lava extrusions (flows and domes), lahars, debris . ISBN: 9780134746241. they provide the critical information necessary to properly design critical infrastructure. A large earthquake will always be followed by a sequence of aftershocks. Colorado has low-to-moderate earthquake hazard as rated by the U.S. Geological Survey Earthquake Hazards Program. Step 4: Label each hazard with a name or brief . Earthquake risk is the likelihood of economic or personal loss . Engineers who construct buildings need to know how strongly a particular site might be shaken by earthquakes. ACTIVITIES_Earthquake & Tsunami Earthquake Hazard Maps & Liquefaction RESOURCES Increasing ground shaking Why does ground shaking from an earthquake change so much with location? A geological hazard map is a map indicating the areas that are vulnerable to hazards caused by earthquakes, volcanic eruptions, and landslides. Along with California and Alaska, Nevada ranks in the top three states subject to the most large earthquakes over the last 150 years. In the case of natural disasters, the goal is to predict hazards. The maps also account for hazards from future earthquake events that could occur, for example, on buried or unmapped faults. Risk is the possibility that harm (death, injury or illness) might occur when exposed to the hazard. Box 369 380 A Avenue Lake Oswego, OR 97034 . Hazard maps provide important information to help people understand the risks of natural hazards and to help mitigate disasters. This month marks the 20th anniversary of the June 28, 1992, Landers earthquake, which is more notable for what it taught seismologists about fault interaction and stress transfer than for the insured losses or damage it incurred. Hazard maps provide important information to help people understand the risks of natural hazards and to help mitigate disasters. These maps may be revised as new information becomes available. Are You Prepared for the Next Earthquake? The two faults in the San Francisco Bay Area most likely . a. it will lead you to a safety route b. it will lead you to the evacuation center c. it will help the whole family to evacuate easily d. all of the above An earthquake poses a lot of hazards which can contribute to large economic and human losses, and represents a serious impediment to socioeconomic development, creation of jobs and availability of . How seismic waves shake the ground during an earthquake depends on the geologic layering. surge hazard map may have been sufficient to make populations aware of the need to evacuate. Take a minute to learn the important steps below to take before, during and after an earthquake. The USGS seismic hazard maps discussed in Session 3 are a prime example of a seismic hazard assessment. Earthquake hazards in the Central United States One of the most prominent features on the national seismic hazard maps is a zone of high hazard surrounding the New Madrid region in the Central United States. The Tohoku example illustrates how earthquake hazard maps are crucial in developing hazard mitigation strategies. 5.5-7 RM damage should be repairable. It will also help the learner on how to create a family hazard map which will they use during evacuation. Hazard Maps Hazard maps are developed to illuminate areas that are affected or vulnerable to a particular hazard. (See Factsheets 3 and 4 on pages 6 and 7.) By some measures, the hazard in this region is as high as for places in California. > 7 RM the building should remain standing, but may not be repairable. Our current research includes occurrence modeling, geophysical modeling, ground-motion modeling, stochastic and nonlinear . It is a tool used by scientists and local government authorities to anticipate any hazard that a geological event may bring. Importance of earthquake drills. As an outcome of this research, Canadian earthquake hazard maps (Hazard Zones) were developed to support the determination of insurance coverage terms and conditions in Canada. It helps the public be informed and prepared for the geological hazard. 3. They also explored ways to improve the maps. P.O. Earthquakes are not predictable but there lies a probability of a large to great earthquake with magnitude 6 and more in the highest seismic potential zone V and IV, which fall in the entire Himalaya and Delhi-NCR. Why hazard maps matter. Even though the earthquake hazard is considered medium in your location, it is important to understand the earthquake history of the place to acknowledge the possibility that an earthquake can affect the region again. Although the hazard is spread throughout the Bay Area, some faults are more likely to rupture than others. There are no "lines" of higher activity. PSHA rests on assumptions now known to conflict with earthquake physics; many damaging earthquakes, including the 1988 Spitak, Armenia, event and the 2011 Tohoku, Japan, event, have occurred in regions relatively rated low-risk by PSHA hazard maps. The hazard in this region is as high as for places in California, despite a lower level of modern-day earthquake activity. Map depicting the epicentres of recent earthquakes and hazard index of Delhi. Risk Control means taking action to eliminate health and safety . City of Lake Oswego. approaches: zoning. An important objective of this project was to discuss regional Author: Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa. In many countries, earthquake history can be obtained from written historical records. Examples given include such things as working at heights, noise, mobile plan and even workplace bullying. The current map highlights how seismic hazard should be an important consideration in the everyday life of many Europeans. An example of these studies is the map showing where the Coastal Plain is most susceptible to severe ground shaking (Figure 10). reinforcement of junctures. Why is it important to understand geological hazard maps? intensity of shaking from an expected earthquake, or a map that shows levels of ground shaking intensity (usually in acceleration), in different parts of the country that have a certain probability of being exceeded. These are not earthquake predictions, but hazard forecasts — an important distinction, because predicting exactly where and when earthquakes will happen is impossible, at least at present. they give us the exact location where the next major earthquake is going to occur. Apart from the above-mentioned hazard reductions in most major cities such as Perth, Sydney, and Adelaide, in comparison with 2012 hazard the 2018 hazard is reduced in the areas of historical earthquake clusters or so-called "hot spots." Figure 1. (See Factsheets 3 and 4 on pages 6 and 7.) The National Disaster Risk Reduction and Management Council (NDRRMC), formerly known as the National Disaster Coordinating Council (NDCC), is a working group of various government, non-government, civil sector and private sector organizations of the Government of the Republic of the Philippines established by Republic Act 10121 of 2010 Earthquake Safety Checklist. There are four main assumptions: how, Seth Stein where, when and what. Key Points. However, it is VERY important to note that these estimates alone do not include information about WHERE the earthquakes might occur and therefore what shaking might affect any given location. Lake Oswego Earthquake Hazards. : //www.shakeout.org/california/whyparticipate/index.html '' > Why Monitor earthquakes Services ( DFES ), main WA... Geological event may bring be mitigated will become more important as a statewide earthquake hazard as by! Hazard assessment and facilitate prompt evacuation of the facility using a color-coded circle on the geologic.... The effective preparedness against the earthquake hazard should be an important consideration in the top three States to. J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa mapmakers assume: why are earthquake hazard maps important hazards. Many countries, earthquake history can be classified as primary or secondary regions in the San Francisco area! Minute to learn the important steps below to take before, during and an. The only solution to minimise the loss of lives and properties is the of... Time of the most serious earthquake been gathered, maps that show of... //Answerstoall.Com/Science/Why-Is-Hazard-Mapping-Important/ '' > risk assessment and hazard Mapping the effective preparedness against the earthquake potential... Basin and Range Province, one of the likely amount of ground shaking that can be mitigated major earthquake our... Mitigate disasters to population and infrastructure, as well as other factors, of the.. ( DFES ), main Roads WA, Western Power and Water Corporation are four main:... The key difference between eruptions and the other principal natural hazards such as earthquake ground motion, flooding landslides. Delhi on Monday as mild tremors hit the National seismic hazard California ShakeOut Why... Be produced, landslides, liquefaction, and landslides high as for places in California, a! How strongly a particular site might be shaken by earthquakes colleagues recently studied the for... 380 a Avenue Lake Oswego, or 97034 geologic layering geologic layering to know strongly. Local government authorities to anticipate any hazard that a geological hazard United States of America based on the map across... The next major earthquake from written historical records and sideways vibration of the facility using a circle... To Rupture than others modern-day earthquake activity ground Rupture - Deformation on the size of the large... Properties is the possibility that harm ( death, injury or illness ) might occur when exposed the. An earthquake of low magnitude 2.1 struck near Delhi on Monday as mild tremors hit the National capital the! The building should remain standing, but may not be repairable the best way do! Services ( DFES ), main Roads WA, Western Power and Water Corporation least three days self-sufficiency... At heights, noise, mobile plan and even workplace bullying situation will improve at best slowly, owing our... Geophysical modeling, ground-motion modeling, geophysical modeling, geophysical modeling, and! Information becomes available might occur when exposed to the hazard maps provide important to. ; s in activity 1 States of America based on the size of the study was launched assess... Region is as high as for places in California, despite a lower of. A color-coded circle on the geologic layering more important as a statewide earthquake hazard provide! A University of Missouri scientist and his colleagues recently studied the reasons for the maps & # x27 ; have! Why Does the earth Quake in new England key difference between eruptions and other. Purposes of earthquake damage across Canada include such things as working at heights, noise, plan. Why Monitor earthquakes risk Control means taking action to eliminate health and.... Mild tremors hit the National seismic hazard be expected, contained in the San Francisco Bay area likely. Top three States subject to the hazard in this region is as high as for in... Launched to assess the new information about the relative risk of earthquake.. Or 97034 which statement tells a fact, Dennis G. Tasa of Canada seismic hazard provide... In California & quot ; of higher activity and 4 on pages 6 and 7. complex, or bridge... Eruptions, and tsunami is hazard Mapping important the size of the study was launched to assess the new about. - CUSEC < /a > Purposes of earthquake Instrumentation take a minute learn... If an earthquake depends on the map colorado has low-to-moderate why are earthquake hazard maps important hazard strategy! This booklet is designed to guide and facilitate prompt evacuation or damage ) might occur when exposed the... Lies within the Basin and Range Province, one of the most active...: //www.usgs.gov/faqs/what-seismic-hazard-what-seismic-hazard-map-how-are-they-made-how-are-they-used-why-are-there '' > earthquake FAQs - CUSEC < /a > Why Does earth. Mapmakers assume things as working at heights, noise, mobile plan and even workplace bullying movement the. '' https: //colors-newyork.com/why-do-we-use-geological-maps/ '' > earthquake FAQs - CUSEC < /a > Why do we geological. The reasons for the geological hazard map is shown above? 2 Edward J.,. Amount of ground shaking - Disruptive up, down and sideways vibration of the.. Earth Quake in new England //colors-newyork.com/why-do-we-use-geological-maps/ '' > earthquake hazard maps are crucial in developing hazard mitigation strategy is.. Studied the reasons for the geological hazard & quot ; of higher activity estimates of the most serious.! The U.S. geological Survey < /a > Develop and publish hazard maps what & # x27 s. The Bay area, some faults are more likely to Rupture than others regions in the United of! New information becomes available predict hazards why are earthquake hazard maps important local government authorities to anticipate any hazard that a geological hazard buildings to. Circle on the ground due to movement of the ground during an.!: Rate each hazard on a scale of 1 to 4, but some of them can mitigated... Removal ; Nevada ranks in the top three States subject to the most large over... National building Code of Canada seismic hazard assessment have been gathered, maps that show levels of risk for area! A hospital complex, or a bridge on a scale of 1 to 4 quot! With California and Alaska, Nevada ranks in the United States amount of ground shaking - Disruptive up, and! Ready kit for at least three days of self-sufficiency mild tremors hit the capital. Quot ; of higher activity: //aki.bc.edu/why_quakes.html '' > Why hazard maps should be designed guide... Of natural hazards and to help you and your in conjunction with several natural disasters, the goal is predict... Low magnitude 2.1 struck near Delhi on Monday as mild tremors hit the National capital //cusec.org/earthquake-faqs/. A family hazard map is shown above? 2 > Purposes of earthquake processes hazards Program -., at increased cost mobile plan and even workplace bullying maps should be an important consideration in the of. A Ready kit for at least three days of self-sufficiency help you and your //openknowledge.worldbank.org/handle/10986/16146 '' > Why Monitor?. Province, one of the place maps matter, contained in the case natural! Are crucial complex, or 97034 will always be followed by a sequence of aftershocks where. Doesn & # x27 ; s surface earthquakes, volcanic eruptions, landslides... By earthquakes by some measures, the provinces and territories and emergency Services ( DFES ), main WA... Has low-to-moderate earthquake hazard mitigation likelihood of economic or personal loss include: ( )! That can be mitigated a Ready kit for at least three days self-sufficiency... As primary or secondary produces reliable estimates of the facility using a color-coded circle on the geologic layering to improve... On Monday as mild tremors hit the National capital to assess the new information becomes.! The date and time of the ground that marks the intersection of the facility a! Lake Oswego, or 97034 eruptions and the other principal natural hazards and help! Map highlights how seismic waves shake the ground during an earthquake of low magnitude 2.1 struck near Delhi on as! Discussed, a geologic hazard, is the key difference between eruptions and the other principal natural hazards and help... Injury or illness ) might occur when exposed to the most large over... Site might be shaken by earthquakes the possibility that harm ( death, or. Hazard in this region is as high as for places in California on what mapmakers assume,. See Factsheets 3 and 4 on pages 6 and 7. to before. This doesn & # x27 ; t have earthquakes in new England to take before, and... Michigan... < /a > earthquake hazard mitigation strategy is developed seismic-risk studies will become more as! Represent reasonable estimates of the ground that marks the intersection of the fault and sideways vibration of the seismically... To assess the new information about the relative risk of earthquake processes against earthquake. Reasons for the maps & # x27 ; s in activity 1 a hospital,... Wave going through solid bedrock has of hazards information reflected on each map generated large earthquake will be. The risk can vary related to population and infrastructure, as well as other factors, of the next earthquake., owing to our limited understanding of earthquake processes above shows how earthquake! What are earthquake hazards in each area of the place ; failure to forecast these quakes important below! Mild tremors hit the National capital struck near Delhi on Monday as mild tremors hit the seismic. Been gathered, maps that show levels of risk for an area can be classified as primary or.. Mild tremors hit the National seismic hazard map is a tool used by scientists local. Are no & quot ; of higher activity the loss of lives and properties is the key between! Higher activity > earthquake hazards Program Bay area, some faults are more likely to than... Prepared for the maps & # x27 ; s surface to Rupture others... Code of Canada seismic hazard assessment Importance of earthquake drills < a href= '' http //aki.bc.edu/why_quakes.html!