This is a seismogram from the Johnston Island station in the Pacific Ocean. The prominent noise represents shock waves from a magnitude 6.4 offshore earthquake that hit the San Cristobal Trench area in the Solomon Islands, northeast of Australia. The quake occurred at 1:44 PM, local time, on 15 October 2021. The epicenter was between Vangunu Island and the Russell Islands. The hypocenter was between 20 and 25 kilometers deep.
See info. at:
earthquake.usgs.gov/earthquakes/eventpage/us6000furk/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: San Cristobal Trench magnitude 6.4 earthquake earthquakes quake quakes 15 October 2021 Solomon Islands offshore seismogram seismograms
This is a seismogram from the Honiara seismic station in the Solomon Islands. The noise is from a powerful, magnitude 7.0 offshore earthquake in the San Cristobal Trench area of the Solomon Islands, northeast of Australia. The quake occurred at 1:03 PM, local time, on 22 November 2022. The epicenter was southwest of (offshore from) western Guadalcanal Island. The hypocenter was between 10 and 20 kilometers deep.
This is the eleventh magnitude 7+ earthquake of 2022.
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Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000irfb/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: San Cristobal Trench magnitude 7.0 earthquake earthquakes quake quakes 22 November 2022 Solomon Islands Guadalcanal Island seismogram seismograms
This is a seismogram from the Honiara seismic station in the Solomon Islands. The prominent noise is from a powerful, magnitude 7.0 offshore earthquake in the San Cristobal Trench area of the Solomon Islands, northeast of Australia. The quake occurred at 1:03 PM, local time, on 22 November 2022. The epicenter was southwest of (offshore from) western Guadalcanal Island. The hypocenter was between 10 and 20 kilometers deep.
This is the eleventh magnitude 7+ earthquake of 2022.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000irfb/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: San Cristobal Trench magnitude 7.0 earthquake earthquakes quake quakes 22 November 2022 Solomon Islands Guadalcanal Island seismogram seismograms
This is a seismogram from the South Karori seismic station in New Zealand. The prominent noise is from a powerful, magnitude 7.0 offshore earthquake in the San Cristobal Trench area of the Solomon Islands, northeast of Australia. The quake occurred at 1:03 PM, local time, on 22 November 2022. The epicenter was southwest of (offshore from) western Guadalcanal Island. The hypocenter was between 10 and 20 kilometers deep.
This is the eleventh magnitude 7+ earthquake of 2022.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000irfb/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: San Cristobal Trench magnitude 7.0 earthquake earthquakes quake quakes 22 November 2022 Solomon Islands Guadalcanal Island seismogram seismograms
This map (provided by the United States Geological Survey) shows the location of a powerful, magnitude 7.0 offshore earthquake in the San Cristobal Trench area of the Solomon Islands, northeast of Australia. The quake occurred at 1:03 PM, local time, on 22 November 2022. The epicenter was southwest of (offshore from) western Guadalcanal Island. The hypocenter was between 10 and 20 kilometers deep.
This is the eleventh magnitude 7+ earthquake of 2022.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000irfb/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: San Cristobal Trench magnitude 7.0 earthquake earthquakes quake quakes 22 November 2022 Solomon Islands Guadalcanal Island map maps seismogram seismograms