|
2021 Lasithi Earthquake
The 2021 Lasithi earthquake was a magnitude 6.4 earthquake with a maximum intensity of VIII (''Severe'') on the Modified Mercalli Intensity Scale which occurred on October 12, 2021, 12:24 ( UTC+3:30) off the island of Crete. The quake was also felt at low intensity as far as Cairo and Istanbul. The quake occurred on the anniversary of the 1856 Heraklion earthquake which killed about 600 people and about two weeks after the 2021 Arkalochori earthquake. Weak tremors were felt in Giza and Cairo, which also coincided with the anniversary of the 1992 Cairo earthquake. The tremor was the largest earthquake in Greece since the 2020 Aegean Sea earthquake. Earthquake The quake was recorded as a 6.3 earthquake by the European-Mediterranean Seismological Centre, but was upgraded to 6.4 in magnitude. Efthymios Lekkas, president of the Earthquake Planning and Protection Organisation, said that the quake was not directly related to the first tremor a month ago, but instead was a sign of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peak Ground Acceleration
Peak ground acceleration (PGA) is equal to the maximum ground acceleration that occurred during earthquake shaking at a location. PGA is equal to the amplitude of the largest absolute acceleration recorded on an accelerogram at a site during a particular earthquake. Earthquake shaking generally occurs in all three directions. Therefore, PGA is often split into the horizontal and vertical components. Horizontal PGAs are generally larger than those in the vertical direction but this is not always true, especially close to large earthquakes. PGA is an important parameter (also known as an intensity measure) for earthquake engineering, The design basis earthquake ground motion (DBEGM) is often defined in terms of PGA. Unlike the Richter and moment magnitude scales, it is not a measure of the total energy (magnitude, or size) of an earthquake, but rather of how hard the earth shakes at a given geographic point. The Mercalli intensity scale uses personal reports and observations to mea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aftershocks
In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousands of instrumentally detectable aftershocks, which steadily decrease in magnitude and frequency according to a consistent pattern. In some earthquakes the main rupture happens in two or more steps, resulting in multiple main shocks. These are known as doublet earthquakes, and in general can be distinguished from aftershocks in having similar magnitudes and nearly identical seismic waveforms. Distribution of aftershocks Most aftershocks are located over the full area of fault rupture and either occur along the fault plane itself or along other faults within the volume affected by the strain associated with the main shock. Typically, aftershocks are found up to a distance equal to the rupture length away from the fault plane. The pattern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In 2021
{{Infobox earthquakes in year, year=2021, 9.0+=0, 4.0–4.9=14,643, 5.0–5.9=2,046, 6.0–6.9=141, 7.0–7.9=16, 8.0–8.9=3, strongest=8.2 {{M, w, link=y {{flagicon, United StatesUnited States, deadliest={{nowrap, 7.2 Mw {{flagicon, Haiti Haiti 2,248 deaths, location_map=Earth, fatalities=2,478, location_map_places= {{Location map~, Earth, mark = Green pog.svg, lat_deg = 28.232, lon_deg = 104.189 {{Location map~, Earth, mark = Green pog.svg, lat_deg = -2.757, lon_deg = 122.240 {{Location map~, Earth, mark = Green pog.svg, lat_deg = 45.431, lon_deg = 16.244 {{Location map~, Earth, mark = Green pog.svg, lat_deg = 40.116, lon_deg = 33.275 {{Location map~, Earth, mark = Green pog.svg, lat_deg = -2.981, lon_deg = 118.894 {{Location map~, Earth, mark = Green pog.svg, lat_deg = 26.926, lon_deg = 55.186 {{Location map~, Earth, mark = Green pog.svg, lat_deg = 26.926, lon_deg = 55.186 {{Location map~, Earth, mark = Green pog.svg, lat_deg = 37.176, lon_deg = -3.744 {{Location map~, Earth, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malevizi
Malevizi ( el, Μαλεβίζι) is a municipality in Heraklion regional unit, Crete, Greece. The seat of the municipality is the town of Gazi. The municipality has an area of . Municipality The municipality Malevizi was formed at the 2011 local government reform by the merger of the following 3 former municipalities, that became municipal units: *Gazi *Krousonas * Tylisos Province The province of Malevizi ( el, Επαρχία Μαλεβιζίου) was one of the provinces of the Heraklion Prefecture. Its territory corresponded with that of the current municipality Malevizi, the municipal unit Gorgolainis and parts of Paliani and Heraklion Heraklion or Iraklion ( ; el, Ηράκλειο, , ) is the largest city and the administrative capital city, capital of the island of Crete and capital of Heraklion (regional unit), Heraklion regional unit. It is the fourth largest city in Gree .... It was abolished in 2006. References {{Prefectures and provinces of Greece Mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsunami
A tsunami ( ; from ja, 津波, lit=harbour wave, ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami. Unlike normal ocean waves, which are generated by wind, or tides, which are in turn generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water from a large event. Tsunami waves do not resemble normal undersea currents or sea waves because their wavelength is far longer. Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide. For this reason, it is often referred to as a tidal wave, although this usage is not favoured by the scientific community because it might g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National And Kapodistrian University Of Athens
The National and Kapodistrian University of Athens (NKUA; el, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών, ''Ethnikó ke Kapodistriakó Panepistímio Athinón''), usually referred to simply as the University of Athens (UoA), is a public university in Athens, Greece."''The EEC’s assessment is that University of Athens is worthy of merit. Educate faculty in the need for QA and evaluation. The successful process of self-evaluation can be replicated. An impartial, genuine, honest, open, effective and constructive strategic planning and communication between the Institution and the state needs to be implemented in order to put in place measures for its longer term viability and tradition of excellence. We conclude by pointing out that the recommendations indicated in our report are intended as ways to improve an already excellent Institution. The culture of excellence in research and teaching that the Institution has established for itself wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disaster Management
Emergency management or disaster management is the managerial function charged with creating the framework within which communities reduce vulnerability to hazards and cope with disasters. Emergency management, despite its name, does not actually focus on the management of emergencies, which can be understood as minor events with limited impacts and are managed through the day to day functions of a community. Instead, emergency management focuses on the management of disasters, which are events that produce more impacts than a community can handle on its own. The management of disasters tends to require some combination of activity from individuals and households, organizations, local, and/or higher levels of government. Although many different terminologies exist globally, the activities of emergency management can be generally categorized into preparedness, response, mitigation, and recovery, although other terms such as disaster risk reduction and prevention are also common. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Applied Geology
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology, and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. It also provides tools to determine the relative and absolute ages of rocks found in a given location, and also to describe the histories of those rocks. By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. Geology provides the primary evidence for plate tectonics, the evolutionary history of life, and the Earth's past climates. Geologists broadly study the properties and processes of E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sitia
Sitia ( el, Σητεία) is a port town and a municipality in Lasithi, Crete, Greece. The town has 9,912 inhabitants (2011) and the municipality has 18,318 (2011). It lies east of Agios Nikolaos and northeast of Ierapetra. Sitia port is on the Sea of Crete, part of the Aegean Sea and is one of the economic centers of the Lasithi region. European route E75, which ends in Vardø, starts in Sitia. Sitia is served by the Sitia Public Airport. Sitia has not experienced the effects of mass tourism even though there is a long beach along the road leading to Vai and several places of historical interest. Geography Municipality The municipality Sitia was formed at the 2011 local government reform by the merger of the following 3 former municipalities which became municipal units: * Itanos * Lefki, Lasithi *Sitia The municipality has an area of , the municipal unit . Province The province of Siteia ( el, Επαρχία Σητείας) was one of the provinces of Lasithi. Its territo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extensional Tectonics
Extensional tectonics is concerned with the structures formed by, and the tectonic processes associated with, the stretching of a planetary body's crust or lithosphere. Deformation styles The types of structure and the geometries formed depend on the amount of stretching involved. Stretching is generally measured using the parameter ''β'', known as the ''beta factor'', where : \beta = \frac \,, ''t''0 is the initial crustal thickness and ''t''1 is the final crustal thickness. It is also the equivalent of the strain parameter ''stretch''. Low beta factor In areas of relatively low crustal stretching, the dominant structures are high to moderate angle normal faults, with associated half grabens and tilted fault blocks. High beta factor In areas of high crustal stretching, individual extensional faults may become rotated to too low a dip to remain active and a new set of faults may be generated. Large displacements may juxtapose syntectonic sediments against metamorphic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
365 Crete Earthquake
The 365 Crete earthquake occurred at about sunrise on 21 July 365 in the Eastern Mediterranean, with an assumed epicentre near Crete. Geologists today estimate the undersea earthquake to have been a moment magnitude 8.5 or higher. It caused widespread destruction in the central and southern Diocese of Macedonia (modern Greece), Africa Proconsularis (northern Libya), Egypt, Cyprus, Sicily, and Hispania (Spain). On Crete, nearly all towns were destroyed. The earthquake was followed by a tsunami which devastated the southern and eastern coasts of the Mediterranean, particularly Libya, Alexandria, and the Nile Delta, killing thousands and hurling ships inland.Ammianus Marcellinus"Res Gestae" 26.10.15–19 The quake left a deep impression on the late antique mind, and numerous writers of the time referred to the event in their works. Geological evidence Recent (2001) geological studies view the 365 Crete earthquake in connection with a clustering of major seismic activity in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegean Sea Plate
The Aegean Sea Plate (also called the Hellenic Plate or Aegean Plate) is a small tectonic plate located in the eastern Mediterranean Sea under southern Greece and western Turkey. Its southern edge is the Hellenic subduction zone south of Crete, where the African Plate is being swept under the Aegean Sea Plate. Its northern margin is a divergent boundary with the Eurasian Plate. The seafloor in this region is about 350 m below sea level, while the adjacent Black Sea and Mediterranean Sea are 1300–1500 m deep. For this reason it is considered a high plateau between the seas. Evidence suggests the Aegean Plate contains thinned continental crust, rather than oceanic crust. Since its creation the crust has been thinned through various processes, including post-orogenic collapse and crustal extension. This extension is responsible for the formation of the Gulf of Corinth. Previous observations of the region's motion described the crust under the Aegean Sea as a part of the Ana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Disaster Management")
