A travel time curve is a graph of the time that it takes for seismic waves to travel from the epicenter of an earthquake to the hundreds of seismograph stations around the world the arrival times of p, s, and surface waves are shown to be predictable this animates an iris poster linked to this animation. Richter magnitude: the richter magnitude is a measure of the amplitude of ground movement because the amplitude recorded on seismograms will decrease with increasing distance from the earthquake the distance must first be determined so that it can be corrected for will depend on the distance from the earthquake epicenter and the magnitude. The epicenter was located at 3704° n latitude, 12188° w longitude near loma prieta peak in the santa cruz mountains, approximately 14 km (9 mi) northeast of santa cruz and 96 km (60 mi) south-southeast of san francisco. 2 eos 101 homework #2: earthquake: epicenter and magnitude before attempting this homework – view the accompanying powerpoint presentation this exercise set consists of three seismograms (page 2), a travel-time graph (page 3), a map. Activity 4: locating an earthquake epicenter examining seismograms the three basic types of seismic wave generated.
For example, a magnitude 7 earthquake on the new madrid fault system could probably be felt along the entire eastern seaboard, but a magnitude 7 in the san francisco area will not be felt in la there are also secondary effects, such as liquifaction and the tendency of sedimentary basins to amplify shaking. There are a number of ways to measure the magnitude of an earthquake the first widely-used method, the richter scale, was developed by charles f richter in 1934it used a formula based on amplitude of the largest wave recorded on a specific type of seismometer and the distance between the earthquake and the seismometer. The april 2015 nepal earthquake (also known as the gorkha earthquake) killed nearly 9,000 people and injured nearly 22,000 it occurred at 11:56 nepal standard time on 25 april 2015, with a magnitude of 78 m w  or 81 m s  and a maximum mercalli intensity of viii ( severe . 274 koyi et al: epicenter distribution and magnitude of earthquakes a 2 1 3 4 5 high friction decollement deformation front b 1 2 4 3 low friction (ductile) decollement.
On october 17, 1989, a magnitude 69 earthquake hit the san francisco bay area, killing 67 people and causing more than $5 billion in damages on october 17, 1989, a magnitude 69 earthquake hit. The difference between the epicenter and the focus of an earthquake lies in the location of their origins the focus is the exact point inside the crust of the earth where the quake begins, while the epicenter is the point on the earth's surface directly above the focus. Using the longitude, latitude and magnitude of each earthquake, plot the epicenter on the map because of the scale of the map, it will be sufficiently accurate to round-off the longitude and latitude values to the nearest degree. • student worksheet: “locating the epicenter” magnitude describes the amount of shaking and energy released during a quake on aver-age, one earthquake of magnitude 7 to 8 occurs each year in alaska second, they consider the total area of sea floor that was disturbed by the quake this can be determined by examining the locations. Distance from epicenter (km) magnitude amplitude (mm) 100 2 100 3 100 4 100 5 2 based on your measurements, complete this sentence: an increase of 1 on the magnitude scale increases the amplitude of the seismic waves by a factor of _____ microsoft word - earthquakemagnitudesdoc.
The quake's epicenter was about 273 kilometers (17 miles) east of the city of tomakomai, which has a population of about 175,000, and 648 kilometers (403 miles) southeast of sapporo, which is a. The earthquake, which had a magnitude of 82 and struck shortly before midnight on thursday, was felt by tens of millions of people in mexico and in guatemala, where at least one person died as well. The epicenter, epicentre /ˈɛpɪsɛntər/ or epicentrum in seismology is the point on the earth 's surface directly above a hypocenter or focus , the point where an earthquake or an underground explosion originates. Richter magnitude does not measure intensity b is 001x as intense than a in general, the most destructive earthquake waves are the _____ p waves s waves surface waves q waves where is the focus with respect to the epicenter: directly below the epicenter directly above the epicenter in the p wave shadow zone in the s wave shadow zone.
The epicenter, epicentre / ˈ ɛ p ɪ s ɛ n t ər / or epicentrum in seismology is the point on the earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Epicenter definition is - the part of the earth's surface directly above the focus of an earthquake how to use epicenter in a sentence did you know the part of the earth's surface directly above the focus of an earthquake center see the full definition since 1828 menu join mwu. The richter magnitude of an earthquake is a number: about 3 for earthquakes that are strong enough for people to feel and about 8 for the earth's strongest earthquakes. Triangulation and magnitude: student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the earthquakes living lab students first triangulate the location of an earthquake's epicenter, then calculate its magnitude.
Name: _____locating the epicenter and determining the magnitude of an earthquakelocating the epicenter measuring the s-p time interval there are hundreds of seismic data recording stations throughout the united states and the rest of the world. On 12 january 2010, at 4:53 pm local time, a magnitude 70 earthquake struck the republic of haiti, with an epicenter located approximately 25 km south and west of the cap- ital city of port-au-prince. When an earthquake occurs, its magnitude can be given a single numerical value on the richter magnitude scale however the intensity is variable over the area affected by the earthquake, with high intensities near the epicentre and lower values further away. Gorkha earthquake nset statement on gorkha earthquake [ download] on 25th april, 2015, at 11:56 local time, a massive 76 magnitude earthquake struck nepal, with the epicenter in gorkha district (north-west) of kathmandu and south of the china border.