Earthquakes occur nearly every day in Washington. An iso-seismal map is used to determine the hazard for a particular location in the seismic design standard that engineers use. This map courtesy of the U.S. Geological Survey (USGS) shows the major earthquake hazard areas within the United States based on fault lines. The fact is most states are at risk of major earthquakes, with 39 of the 50 states – including New York and Tennessee – in moderate to high risk areas for seismic activity. Also, since the 13 June quake events, there is a trending of subsequent quake locations in a line away from Christchurch, in a SE direction, towards the eastern-most tip of Banks Peninsula. From the 1960s onwards, Late Quaternary fault traces were shown (as red lines) on geological maps (e.g., Grindley 1960; Kingma 1962; Lensen 1963, but parameters ) describing the kinematics of slip on these faults were only mentioned sparsely, if at all, in the texts accompanying these published maps. They are known to have ruptured the … Actually, Canterbury isn't that 'safe'. The map is from a 2007 report (click here to download) on seismic design categories in Washington. The map also shows potentially active faults from a separate 2014 report (click here to download). The map is created by looking at where the known earthquake faults are and working out how big an earthquake they could create, and how often. Map showing recent earthquake activity in and around Christchurch, New Zealand. I remember seeing a quake risk map of the country in the aftermath of the Canterbury quake & basically, the lower/east south island is a medium risk, Dunedin is 'low risk' the west cost through wellington and up to gisbourne (including the Taupo Volcanic Zone) is high risk, and Hamilton up towards the Far North is of lower risk. Time-lapse visualisations of the February 22 2011 and September 4 2010 earthquakes and … To simplify the design and construction of light timber-framed and smaller concrete block masonry buildings in these regions, New Zealand’s construction standards divide the country into four earthquake risk zones. Many fault lines cut the ground’s surface in New Zealand; each past fault movement would have been accompanied by a large earthquake. Those that are considered likely to move again in the future are called active faults. A line continued out to sea in that direction, would reach some interesting undersea formations that show on Google Maps at the expected distance. Most are too small to be felt or cause damage. MinMap (Minerals Map) New Zealand Active Faults Database; PETLAB (Petrology Map) Web Services Web Map Services (WMS) and Web Feature Services (WFS) provide geoscience map information direct from GNS Science servers. Usually you expect one big earthquake on one big fault, but like in the Christchurch earthquakes, and in fact we saw this in Edgecumbe in 1987, … In the 1970s and 1980five active fault maps s Christchurch was struck by a powerful 7.1-magnitude earthquake that smashed buildings, cracked roads and twisted rail lines and also ripped a new 3.5 metre wide fault line … This map shows areas of seismic risk from high (red) to low (grayish-green). This map shows the relative likelihood of earthquake shaking across Canterbury – the warmer the colour the more likely you are, over a lifetime, to experience strong earthquake shaking.
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