| 3 - 3 |
Precursory phenomena of phreatic eruption (Part 2) |
![]()
Top of Part 3
![]()
Previous p.
![]()
Next page
|
The earthquake swarm started
in November, 1989
broadened the hypocenter
area to the east.
In July of the next year,
there occurred 33 earthquakes
which can be felt;
among them six recorded
the seismic intensity of 3.
The biggest one was of
the magnitude of M4.9
and of the depth of 4 km.
|
![]() |
Monthly frequency of earthquakes and movement of their hypocenters |
![]() |
|
|
|
![]() |
|
|
|
![]() |
|
|
|
![]() |
|
|
|
![]() |
Top page of Part 3
![]()
Previous page
![]()
Next page
|