Gravitational wave detectors could provide advance notice of seismic waves caused by powerful earthquakes (magnitude 8.5 and greater), allowing a little more time for people to evacuate (particularly at coastal regions that may be endangered by a tsunami):
Gravity signals that race through the ground at the speed of light could help seismologists get a better handle on the size of large, devastating quakes soon after they hit, a study suggests. The tiny changes in Earth's gravitational field, created when the ground shifts, arrive at seismic-monitoring stations well before seismic waves.
"The good thing we can do with these signals is have quick information on the magnitude of the quake," says Martin Vallée, a seismologist at the Paris Institute of Earth Physics.
Seismometers in China and South Korea picked up gravity signals immediately after the magnitude-9.1 Tohoku earthquake that devastated parts of Japan in 2011, Vallée and his colleagues report in Science on December 1. The signals appear as tiny accelerations on seismic-recording equipment, more than a minute before the seismic waves show up.
Observations and modeling of the elastogravity signals preceding direct seismic waves (DOI: 10.1126/science.aao0746) (DX)
Related: First Joint Detection of Gravitational Waves by LIGO and Virgo
The Nobel Physics Prize Has Been Awarded to 3 Scientists for Discoveries in Gravitational Waves
"Kilonova" Observed Using Gravitational Waves, Sparking Era of "Multimessenger Astrophysics"
(Score: 2) by c0lo on Tuesday December 05 2017, @07:34AM
No delays in propagation, no screening by other masses, fastest speed between two points, make the spacetime work for you and squeeze it to the max.
Need black holes or catastrophic falls to function: on the stock market, those are so common and/or so easy to engineer that you'll never run out of bandwidth capacity.
Now, that's such a bleeding edge tech, I'll have to ask you to sign a NDA before examining your investment proposal.
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford