This seismogram is from the Bucovina Array's BUR01 seismic station in northern Romania. The noise was caused by a magnitude 5.1 earthquake in the Carpathian Mountains of eastern Romania. The quake hit at 6:50 AM, local time, on 3 November 2022. The epicenter was about 20 kilometers west-southwest of the town of Vintileasca, Romania. The hypocenter was between 145 and 150 kilometers deep. Shaking resulted from reverse faulting along a ~north-south striking fault zone.
This earthquake was in the Vrancea zone, where most of Romania's seismicity occurs. The Vrancea zone is a little-understood area of intermediate-depth earthquakes at a major bend in the trend of the Carpathian Mountains.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000im41/exec...
and
en.wikipedia.org/wiki/List_of_earthquakes_in_Romania
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An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy. Earthquake activity is called "seismicity". The study of earthquakes is called "seismology". The actual underground location of an earthquake is the hypocenter, or focus. The site at the Earth's surface, directly above the hypocenter, is the epicenter. Minor earthquakes may occur before a major event - such small quakes are called foreshocks. Minor to major quakes after a major event are aftershocks.
Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries. They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).
Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves. P-waves and S-waves are body waves - they travel through solid rocks. Love waves and Rayleigh waves travel only at the surface - they are surface waves. P-waves are push-pull waves that travel quickly and cause little damage. S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage. Love waves are side-to-side surface waves, like a slithering snake. Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.
Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.
Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.
Tags: Vrancea zone Carpathian Mountains Romania magnitude 5.1 earthquake earthquakes quake quakes reverse fault faults faulting 3 November 2022 seismicity seismogram seismograms
This map (provided by the United States Geological Survey) shows the location of a magnitude 5.1 earthquake in the Carpathian Mountains of eastern Romania. The quake hit at 6:50 AM, local time, on 3 November 2022. The epicenter was about 20 kilometers west-southwest of the town of Vintileasca, Romania. The hypocenter was between 145 and 150 kilometers deep. Shaking resulted from reverse faulting along a ~north-south striking fault zone.
This earthquake was in the Vrancea zone, where most of Romania's seismicity occurs. The Vrancea zone is a little-understood area of intermediate-depth earthquakes at a major bend in the trend of the Carpathian Mountains.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000im41/exec...
and
en.wikipedia.org/wiki/List_of_earthquakes_in_Romania
--------------------------------
An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy. Earthquake activity is called "seismicity". The study of earthquakes is called "seismology". The actual underground location of an earthquake is the hypocenter, or focus. The site at the Earth's surface, directly above the hypocenter, is the epicenter. Minor earthquakes may occur before a major event - such small quakes are called foreshocks. Minor to major quakes after a major event are aftershocks.
Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries. They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).
Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves. P-waves and S-waves are body waves - they travel through solid rocks. Love waves and Rayleigh waves travel only at the surface - they are surface waves. P-waves are push-pull waves that travel quickly and cause little damage. S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage. Love waves are side-to-side surface waves, like a slithering snake. Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.
Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.
Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.
Tags: Vrancea zone Carpathian Mountains Romania magnitude 5.1 earthquake earthquakes quake quakes reverse fault faults faulting 3 November 2022 seismicity map maps seismogram seismograms
This seismogram is from the Bucovina Array's BUR03 seismic station in northern Romania. The noise was caused by a magnitude 4.2 earthquake in the western Romania. The quake hit at 8:46 PM, local time, on 22 May 2023. The epicenter was about 5 kilometers east of the town of Cruceni, Romania. The hypocenter was between 10 and 15 kilometers deep.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000k30y/exec...
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An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy. Earthquake activity is called "seismicity". The study of earthquakes is called "seismology". The actual underground location of an earthquake is the hypocenter, or focus. The site at the Earth's surface, directly above the hypocenter, is the epicenter. Minor earthquakes may occur before a major event - such small quakes are called foreshocks. Minor to major quakes after a major event are aftershocks.
Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries. They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).
Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves. P-waves and S-waves are body waves - they travel through solid rocks. Love waves and Rayleigh waves travel only at the surface - they are surface waves. P-waves are push-pull waves that travel quickly and cause little damage. S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage. Love waves are side-to-side surface waves, like a slithering snake. Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.
Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.
Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.
Tags: Romania magnitude 4.2 earthquake earthquakes quake quakes 22 May 2023 seismogram seismograms
This seismogram is from the Kalwaria Paclawska seismic station in southwestern Poland. The noise was caused by a magnitude 5.0 earthquake in the Carpathian Mountains of northeastern Slovakia, in Eastern Europe. The quake hit at 8:23 PM, local time, on 9 October 2023. The epicenter was about 3.5 to 4.0 kilometers northwest of the town of Jankovce, Slovakia. Shaking resulted from reverse faulting along a ~NNW-SSE striking fault zone or a ~NNE-SSW striking fault zone.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us6000lec2/exec...
--------------------------------
An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy. Earthquake activity is called "seismicity". The study of earthquakes is called "seismology". The actual underground location of an earthquake is the hypocenter, or focus. The site at the Earth's surface, directly above the hypocenter, is the epicenter. Minor earthquakes may occur before a major event - such small quakes are called foreshocks. Minor to major quakes after a major event are aftershocks.
Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries. They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).
Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves. P-waves and S-waves are body waves - they travel through solid rocks. Love waves and Rayleigh waves travel only at the surface - they are surface waves. P-waves are push-pull waves that travel quickly and cause little damage. S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage. Love waves are side-to-side surface waves, like a slithering snake. Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.
Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.
Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.
Tags: Carpathian Mountains Slovakia magnitude 5.0 earthquake earthquakes quake quakes 9 October 2023 seismogram seismograms
This seismogram is from the Piszkes seismic station in Hungary. The red noise was caused by a magnitude 5.0 earthquake in the Carpathian Mountains of northeastern Slovakia, in Eastern Europe. The quake hit at 8:23 PM, local time, on 9 October 2023. The epicenter was about 3.5 to 4.0 kilometers northwest of the town of Jankovce, Slovakia. Shaking resulted from reverse faulting along a ~NNW-SSE striking fault zone or a ~NNE-SSW striking fault zone.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us6000lec2/exec...
--------------------------------
An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy. Earthquake activity is called "seismicity". The study of earthquakes is called "seismology". The actual underground location of an earthquake is the hypocenter, or focus. The site at the Earth's surface, directly above the hypocenter, is the epicenter. Minor earthquakes may occur before a major event - such small quakes are called foreshocks. Minor to major quakes after a major event are aftershocks.
Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries. They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).
Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves. P-waves and S-waves are body waves - they travel through solid rocks. Love waves and Rayleigh waves travel only at the surface - they are surface waves. P-waves are push-pull waves that travel quickly and cause little damage. S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage. Love waves are side-to-side surface waves, like a slithering snake. Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.
Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.
Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.
Tags: Carpathian Mountains Slovakia magnitude 5.0 earthquake earthquakes quake quakes 9 October 2023 seismogram seismograms