Arthur T Knackerbracket has processed the following story:
A groundbreaking study has revealed new insights into the Earth’s crust’s immediate behavior following earthquakes. Researchers have utilized sub-daily Global Positioning System (GPS) solutions to accurately measure the spatial and temporal evolution of early afterslip following the 2010 Mw 8.8 Maule earthquake. This innovative approach marks a significant advancement in seismic analysis, offering a more precise and rapid depiction of ground deformations, which is essential for assessing seismic hazards and understanding fault line activities.
The aftermath of an earthquake is marked by intricate postseismic adjustments, particularly the elusive early afterslip. Daily seismic monitoring has struggled to capture the rapid and complex ground movements occurring in the critical hours post-quake. The intricacies of these initial activities and their profound implications for seismic hazard assessment highlight an urgent need for more refined and immediate monitoring techniques.
Wuhan University researchers, in a paper published on July 29, 2024, in Satellite Navigation, unveil their meticulous examination of the Maule earthquake’s early afterslip. Utilizing sub-daily GPS solutions, the study delivers a comprehensive narrative of the ground surface deformations occurring in the pivotal hours following the earthquake.
Reference: “Rapid early afterslip characteristics of the 2010 moment magnitude (Mw) 8.8 Maule earthquake determined with sub-daily GPS solutions” by Kai Liu, Yangmao Wen, Jing Zeng, Jianghui Geng, Zhao Li and Caijun Xu, 29 July 2024, Satellite Navigation.
DOI: 10.1186/s43020-024-00145-6
(Score: 4, Interesting) by Username on Monday August 12 2024, @02:30PM (2 children)
So China has access to all GPS data in this region?
Is this some kind of publicly accessible data? I can just see all GPS logs for a region?
I always wondered about this. The US military locking on to the GPS coords of a jihadis phone for drone strikes. If any country can do it now, that's pretty scary.
(Score: 1) by khallow on Monday August 12 2024, @04:07PM
Everyone does. You just need to have sensors with GPS in the region. And if those sensors have publicly accessible logs, there you go with the worst case scenario.
(Score: 1, Informative) by Anonymous Coward on Tuesday August 13 2024, @12:14AM
The GPS data in question are not from cell phones, but from geodetic GPS stations that are deployed for these kind of purposes. They are really really really good antennas and receivers and they are deployed over the whole earth. This kind of analysis is very interesting because there are many noise sources (e.g., signal delays from the ionosphere, multi-path signal reflections) as well as physical effects that need to be removed (e.g., the bulging of the ground due to lunar tides) to get at what they are looking for.