Deep fluids play active roles during the preparatory phases of large earthquakes and,
through their chemical signature, carry information about deep processes within the …

To minimize the loss of life caused by earthquakes, it is crucial to have early warning tools
that provide sufficient warning time. Although various methods are available, their accuracy …

Random chance—is nothing. Random chance does not exist. We call in such a way the
event, the reason of which we do not understand. Nothing can happen without reason or …

Abstract On September 12, 2016, a ML 5.8 earthquake hit Gyeongju in the southeastern part
of the Korean Peninsula (SeKP), although the area is known to be far from the boundary of …

Temporal changes in groundwater chemistry can reveal information about the evolution of
flow path connectivity during crustal deformation. Here, we report transient helium and argon …

In seismically active fault zones, various crustal fluids including gases are released at the
surface. Radon-222, a radioactive gas naturally produced in rocks, is used in volcanic and …

Shallow groundwater collected in Chaozhou, Huizhou, and Guangzhou allowed testing of
concentrations and the isotope ratios of noble gases. Based on the calculated noble gas …

Abstract In Gyeongju, South Korea, local magnitude ML 5.1 and ML 5.8 earthquakes
occurred on 12 September 2016; ML 4.5 aftershocks and> 500 aftershocks with ML> 1.5 …

Helium is a key tracer of mantle geochemical and isotopic heterogeneities and can constrain
our understanding of mantle geodynamics. Nevertheless, the mechanisms of helium storage …

Helium isotope determination may be useful in measuring volcanic activity and issuing
earlier warnings of possible eruptions. A method is presented for measuring the 3He/4He …