Dear Shiba Subedi

Checked out the following article:

Article Application of real-time GPS to earthquake early warning in ...

Dear Shiba Subedi,

There is another article you could go through...!

Operational real-time GPS-enhanced earthquake early warning

R. Grapenthin,I. A. Johanson,R. M. Allen

First published: 07 October 2014

https://doi.org/10.1002/2014JB011400

Cheers,

Arindam

Not at present. Only long range assessment in some cases

Dear Shiba,

Colleagues of mine descibed a possible idea for Tsunami Early warning, some years ago: "Tsunami early warning using GPS‐Shield arrays" by Sobolev et al., 2007; JGR, VOL. 112, B08415, doi:10.1029/2006JB004640.

With kind regards, ALEXANDER

GPS data are used widely in understanding earthquake precursors. Early warning may be possible in near future but not at present.

Dear member of my family ))) Please look at this Data Massing of the shear deficit over the seven years before the...

Dear Shiba Subedi

Here, I just share my experiment about using GPS data in earthquake modeling. Once I used these data to triangulate the network of GPS stations of Zagraos and calculated the components of strain rate tensor in the centroids of the triangles. The tensors information helped me to find out the behavior of crust deformation in Zagros tectonic province.

regards.

Dear Shiba Subedi,

GPS data can not be used correctly well for earthquake early warning systems on its own. For example, you need other tools (geophysical, geochemical, clouds-tectonic, ionospheric, etc)... and should be good to read the comment made by me in 09.10.2021 at my discussion: https://www.researchgate.net/post/Exists-the-next-situation-when-an-outsider-researcher-who-has-achieved-a-very-encouraging-result-in-earthquake-forecasting-is-not-supported

Regards,

Laszlo

Hi Dr Shiba Subedi . Yes . Scientists have discovered a way to identify indicators of a mega earthquake using GPS-based information, an advance that may help improve early warning systems for quakes. GPS picks up an initial signal of movement along a fault similar to a seismometer detecting the smallest first moments of an earthquake. See the link: https://www.google.com/amp/s/indianexpress.com/article/technology/science/gps-data-can-detect-early-signs-of-megaquakes-5756649/lite/

See the following link that might help : http://ceo.scec.org/education/k12/learn/gps4.htm

Also, see the following link that might help: https://preparecenter.org/resource/gps-and-earthquake-early-warning/

What means the EARLY warning? If it is a forecast for minutes before, it is nothing. Long and mead therm accurate forecast is much more better. People can prepare some measures and infrastructures. Water, energy, food and mobile houses can be prepared in the region. All earthquake indicators must be used for a prediction but strong tectonic earthquake is a deformation process. So GNSS is a good tool for the prediction. The main questions: where and how often people have to organise the GNSS monitoring networks. GNSS can monitor the earth crust seismo-deformation process but does not yet know where exactly.

Dear Vladimir,

I did not consider what the question maker understood on the meaning of the EARLY warning... I think he referred to the earthquake forecast a few (1-3) minutes before the earthquake... My response referred to both cases... Actually, I think that I have developed concepts for earthquake forecasting mentally. Their superficial testing have given very good results... Can be determined the place 'exactly'... But these methods upset many current theories accepted of Earth Science... Such statements the employed scientists cannot do but I am being not employed can do it.

Thank you for raising this problem, I hope that we will get response soon from the question maker. It would be nice if we knew something about his opinion as well.

Regards,

Laszlo

Dear Shiba Subedi,

Geodesic methods for studying geodynamic phenomena from the movements of the Earth's surface to the monitoring of critical objects and the prediction of earthquakes have been known since the middle of the XX century. In 1960, at the XII General Assembly of the International Union of Geodesy and Geophysics (IUGG) has established a permanent international Commission on Recent Crustal Movements (CRCM) of the International Association of Geodesy (IAG), which is part of the IUGG. The report on the activities of the CRCM can be viewed at: https://iag.dgfi.tum.de/media/archives/Travaux_99/comm7.htm

In the Russian Federation, in 1993, the Federal System of Seismological Observations and Earthquake Prediction was established, combining the geophysical service, the service of seismic and geodynamic observations, the service for monitoring the geological environment and the service for geodetic control of deformation of the Earth's surface.

The use of data from Global Navigation Satellite Systems (GNSS) makes it possible to implement a system of global and local geodetic monitoring of the movements of the Earth's surface. Some works and proposals can be viewed in the article "Global, continental, regional, national coordinate systems: state, problems, prospects" at https://www.researchgate.net/publication/355228429_Sistemy_koordinat_globalnye_kontinentalnye_regionalnye_nacionalnye_sostoanie_problemy_perspektivy.

Hello,

GPS data may be used to monitor the earthquake precursors i.e. ionospheric TEC which may show anomalies before or after the main shock. You may search the relevant research papers for the same.

Hello

Many researcher use GNSS-TEC data to monitor the earthquake. In my view, this is somewhat similar to GNSS-R technology. Monitor some geological movements and changes by using satellite reflections. And some people use accelerometer data.Highly sensitive accelerometer data can effectively capture some vibration data, but the real-time performance of this method does not seem to be very high.

Dear All,

Today in connection to the post of Alexandr Yagodin have been written the next at the next discussion

(https://www.researchgate.net/post/Exists-the-next-situation-when-an-outsider-researcher-who-has-achieved-a-very-encouraging-result-in-earthquake-forecasting-is-not-supported ):

'Without knowing the operating principle of your machines... Today, on the way home, I came up with a machine in my head, which should be easy to use with a multi-parameter approach in earthquake forecasting, which it takes into account the real cause of earthquakes. Maybe your machine is also based on this principle.'

Regards,

Laszlo