It had a maximum intensity of XI (Extreme) on the Mercalli intensity scale and triggered a devastating tsunami. slowly migrated (~20 km/week) northward along the megathrust from 20.2°S to 19.6°S. According to the USGS, the earthquake struck 62 miles from Iquique, Chile. Tsunami warnings were initially issued by the Pacific Tsunami Warning Center/NOAA/NWS for multiple countries bordering the Pacific Ocean. The April 1, 2014 8.2 magnitude earthquake in northern Chile occurred as the result of thrust faulting at shallow depths near the Chilean coast. The 2014 Iquique main shock generated a tsunami that was recorded by Deep‐ocean Assessment and Reporting of Tsunamis (DART) buoys [e.g., Heidarzadeh et al., 2014] (Figure 1) and tide gauges (Figure 2). The epi-center was at 19.610 et al.S and 70.776 W (Fig. The earthquake generated a tsunami that was recorded at four DART buoy and seven tide gauge stations. location of this sequence in the northern portion of the 1877 seismic gap focused attention on the 38! According to the German Research Centre for Geosciences (GFZ), the quake hit on Sunday 6 December 2020 at 1.47 pm local time at an intermediate depth of 114 km. Here we present a comprehensive analysis of 152 continuous and campaign Global Positioning System time series that captured more than a decade of interseismic loading prior to the event and 2 years of afterslip. Nature 512, 295–298 (2014). The epicenter of the earthquake was approximately 95 kilometres northwest of Iquique. The 2014 Iquique earthquake struck off the coast of Chile on 1 April, with a moment magnitude of 8.2, at 20:46 local time. Continuing megathrust earthquake potential in Chile after the 2014 Iquique earthquake. The extreme fires were caused by a strong typhoon bringing violent winds into Tokyo Bay around the same time of the earthquake. Abstract The 2014 Iquique-Pisagua M w 8.1 earthquake ruptured only parts of the 1877 Northern Chile-Southern Peru seismic gap. (April 2014)Click [show] for important translation instructions. A magnitude Mw 8.2 earthquake ruptured the subduction zone off the coast of northern Chile at 11:46:46 p.m. GMT on April 1, 2014. w 8.2 (USGS 2014) off Iquique (Chile) earthquake of 1 April 2014. The mainshock was preceded by a number of moderate to large shocks and was followed by a large number of moderate to very large aftershocks, including a M7.7 event on 3 April. As shown in Figure 2 f, the foreshock region B extends … 2014 Iquique earthquake Last updated March 04, 2019. Hayes, G. P. et al. On 1 April 2014, a MW 8.2 earthquake occurred in northern Chile, northwest of the town of Iquique; the main shock was followed by a MW 7.7 aftershock two days later (Figure 1). Chilean authorities on Wednesday were assessing the damage from a massive earthquake that struck off the northern coast, causing a small tsunami, but the impact appeared to be mostly limited. A intermediate magnitude 6.0 earthquake was reported around noon near Iquique, Provincia de Iquique, Tarapaca, Chile. On Tuesday, April 1, 2014, at 8:46 p.m. local time in Chile, a subduction earthquake of Mw 8.2 occurred about 100 km northwest of the city of Iquique, where the Nazca plate subducts beneath the South American plate. A magnitude Mw 8.2 earthquake struck the region of Iquique gap on 1 April 2014. This article may be expanded with text translated from the corresponding article in Spanish. A joint Japan–Chile team conducted a post-tsunami field survey to measure the height of the tsunami traces … Seismotectonic setting of northernmost Chile. The 37! RMTs of relocated earthquakes in this sequence are shown and coloured by their location with respect to the slab interface; those interpreted as upper plate events are green, lower plate earthquakes are blue, and interplate events are red. 35! This event was caused by the thrust fault. On April 1 st 2014, a Mw 8.2 earthquake occurred in northern Chile, northwest of the town of Iquique; the main shock was followed by a Mw 7.7 aftershock two days later (Figure 1). On 1 April 2014, Northern Chile was struck by a magnitude 8.1 earthquake following a protracted series of foreshocks. The tsunami amplitudes recorded at two closest tide gauge stations from the epicenter (Pisagua and Iquique) are both 187 cm. The event occurred in the "Iquique seismic gap," a segment of the Nazca-South American subduction zone that had not experienced a significant event since 1877. Figure 1. The 2014 Iquiqueearthquake was caused bythe thrust faulting between theNazca and South America plates. The megathrust … The rupture area had a length of about 200 km and a hypocenter depth of On April 1, 2014 at 20:46:50 local time (23:46:50 UTC), a Mw8.2 megathrust earthquake, with a depth of 20.1 km and epicenter 95 km NW from Iquique, ruptured an estimated surface of about 40 km (strike) by 30 km (dip) with a maximum slip of about 6.5 m (USGS). The 1877 Iquique earthquake occurred at 21:16 local time on 9 May (0:59 on 10 May UTC).It had a magnitude of 8.5 on the surface wave magnitude scale. 1), with a depth of around 25 km and the origin time at 23:46:47 UTC (USGS 2014). A great earthquake (Mw 8.2) occurred on April 1, 2014 at 23:46:46 off the coast of Iquique, Chile (USGS). An earthquake of 8.2 magnitude strikes off the coast of northern Chile, triggering a tsunami alert and killing at least five people. This event was preceded by a long foreshock sequence including a 2-week-long migration of seismicity initiated by a Mw 6.7 earthquake. Chile earthquake: A powerful magnitude-8.2 earthquake struck off Chile's northern coast Tuesday night. Reconnaissance teams from NSF- GEER and CIGIDEN-FONDAP visited the … This earthquake occurred in a historic seismic quiescence zone in Northern Chile (previous significant Mw8.8, 1877). Nevertheless, it took place at a depth of 10 kilometers, and it led to considerable ground shaking (Lutgens and Tarbuck 190). The 2005 Mw7.8 Tarapaca earthquake occurred ~200 km to east of the Iquique earthquake and was identified as a result of normal faulting on a west-dipping plane at depths between 90 and 115 km within the subducting slab of … A Mw 8.2 earthquake occurred on April 1st, 2014 in the Iquique seismic gap of northern Chile. Most of the slip is concentrated along a 60 km by 40 km slip patch near the hypocenter, with magnitude ranging from 5 to 7 m and a depth of 23 km. On April 1, 2014, a Mw 8.1 megathrust earthquake occurred within a previously locked section of the North Chilean subduction zone. north-northwest of Iquique, Chile, and was followed by two weeks of thrust aftershocks that 36! Here we investigate the effect of 2005 Tarapaca earthquake on the occurrence of the 2014 M8.1 Iquique earthquake from the static stress change triggering perspective. Figure 2 | Source processes of events in the March–April 2014 Iquique earthquake sequence. Open in figure viewer PowerPoint. Shaking from Chile's earthquake was felt even in Peru and Bolivia. A 6.9-foot wave was reported off Iquique. The “2014 Iquique earthquake” was caused by the thrust faulting between the Nazca and South America plates. A magnitude-7.6 tremor was reported just miles southwest of Iquique, Chile on Tuesday, April 1, 2014. This earthquake triggered a tsunami, which hit coastal areas in northern Chile. Global Positioning System (GPS) networks recorded the coseismic displacement caused by this earthquake [Schurr et al., 2014] (Figure 2). The slip distribution of the 1 April 2014 Iquique earthquake is obtained by using the least squares inversion of tsunami data at three Deep‐Ocean Assessment and Reporting of Tsunamis stations. View a machine-translated version of the Spanish article. Other estimates of its magnitude have been as high as 8.9 M w and 9.0 M t (based on the size of the tsunami). In turn, the depth of the Iquique earthquake was 20 kilometers, and its impact was less palpable. Nature 512, 295–298 (2014… On Tuesday, April 1, 2014, at 8:46 p.m. local time in Chile, a subduction earthquake of Mw 8.2 occurred about 100 km northwest of the city of Iquique, where the Nazca plate subducts beneath the South American plate. The location and mechanism of the earthquake were consistent with slip on the primary plate boundary interface, or mega thrust, between the Nazca and South America plates. The Integrated Plate Boundary Observatory Chile monitored the entire sequence of events, providing unprecedented resolution of the build-up to the main event and its rupture evolution. The earthquake was preceeded by multiple smaller events including a Mw 6.7 earthquake on March 16, … To compare the 2014 off Iquique foreshock sequence with the one preceding the 2011 Tohoku-oki earthquake, we concentrate our discussion on the foreshock activity in region B of this study. Landslides were triggered, one of which pushed the entire village of Nebukawa and a stationary train with ~100 passengers into the sea. This earthquake triggered a tsunami, which hit coastal areas in northern Chile. The earthquake caused a death toll of at least seven in Chile and left over 200 injured (IOC-ITIC 2014). Over 570,000 homes were destroyed, leaving an estimated 1.9 million homeless. A tsunami was generated from the quake, sea level readings suggest. Repeating earthquakes were found among the foreshock sequence that migrated towards the mainshock hypocenter, suggesting a large-scale slow-slip event … It caused buildings to shake in the port of Iquique, which saw some damage from the … Abstract and Figures The recent earthquake with Mw of 8.3 attacked the northern Chile on the April 1, 2014 resulted in considerable damages to quay structures of the port of Iquique. The seamounts possibly prevented seismic rupture during the 2014 Iquique earthquake from migrating southwards into highly coupled southern part of the northern Chile seismic gap. The Atacama caused several earthquakes recently, like 2014 Iquique earthquake, which left 5 people dead, and 2015 Illapel earthquake, which caused 13 fatalities in Chile and one in Argentina. According to the U.S. Geological Survey (USGS) website report, the earthquake was the result of shallow thrust faulting near the Chilean coast (http://earthquake.usgs.gov/earthquakes/eventpage/usc000nzvd). The 2014 Iquique, Chile earthquake occurred in this area of relatively weak coupling within the seismic gap, where the rate of background seismicity is higher than in the surrounding highly locked segments. The Iquique earthquake sequence and tsunamic of Apr il 1st of 2014 caused minor to moderate damage to geotechnical systems.