File:Turkey magnitude 7.8 & 7.5 earthquakes (3-17 AM & 12-24 PM, 6 February 2023).png
Turkey_magnitude_7.8_&_7.5_earthquakes_(3-17_AM_&_12-24_PM,_6_February_2023).png (800 × 600 pixels, file size: 66 KB, MIME type: image/png)
Captions
Summary
editDescriptionTurkey magnitude 7.8 & 7.5 earthquakes (3-17 AM & 12-24 PM, 6 February 2023).png |
English: This seismogram is from the Ankara seismic station in Turkey. The black scribble is from two magnitude 7+ earthquakes that hit southern Turkey on 6 February 2023. The first was magnitude 7.8 - it occurred at 3:17 AM, local time. The second was magnitude 7.5 - it occurred over 9 hours later at 12:24 PM, local time. These were the fourth and fifth magnitude 7+ earthquakes of 2023. The quakes occurred during a Moon-Earth-Sun alignment.
Info. at: earthquake.usgs.gov/earthquakes/eventpage/us6000jllz/exec... [An event-specific summary is at the bottom of that page.] and earthquake.usgs.gov/earthquakes/eventpage/us6000jlqa/exec... [An event-specific summary is at the bottom of that page.] 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. |
Date | |
Source | https://www.flickr.com/photos/jsjgeology/52672375302/ |
Author | James St. John |
Licensing
edit- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/52672375302. It was reviewed on 6 February 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 February 2023
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:29, 6 February 2023 | 800 × 600 (66 KB) | Görkem Yavuz (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/jsjgeology/52672375302/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Horizontal resolution | 31.49 dpc |
---|---|
Vertical resolution | 31.49 dpc |
Software used |