The Dead Sea is so salty that it kills most animal and plant life, but bacteria, brine shrimp, and a class of plants called halophytes that love salt water thrive there.
Instruments \ Seismic \
formations are mapped by measuring the times required
for a seismic wave (or pulse), generated in the earth
by a near-surface explosion of dynamite, mechanical
impact, or vibration, to return to the surface after
reflection from interfaces between formations having
different physical properties. The reflections are recorded
by detecting instruments responsive to ground motion.
They are laid along the ground at distances from the
shot point which are generally small compared with the
depth of the reflector.
in the reflection times from place to place on the surface
usually indicate structural features in the strata below.
Depths to reflecting interfaces can be determined from
the times using velocity information that can be be
obtained either from the reflected signals themselves
or from surveys in wells. Reflections from depths as
great as 20,000 ft can normally be observed from a single
explosion, so that in most areas geologic structure
can be determined throughout the sedimentary section.
Data Processing and Interpretation