Page 237 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

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219 on shear if: like a in center. arrival Seismic. a as

Exercises PLATE seismograph a by recorded compressional and look would seismograms (a), but in as material starting halfway to the to relative correctly, , epicenter. the from P-phase The arrives

4, Ouse Z NORTH for 7-2 Exercise is and Earth the of side detect can seismograph The what sketch and times same the were Earth the liquid core a with solid, but compare times arrival your . Seismograph A 7-3 for Exercise km 7,500 City. York New station. a at arrive they when

Map
CA.
ae
occurs one on diagram). (see travel Compute liquid; b) entirely were were Earth the sure be (c), and (a). ak Earthquake Diagram recorded is in east due traveling

earthquake side other arrivals. Earth state; c) (b) parts part for earthquake are compression.

An the wave the a) solid For times An waves
7-3 7-4

PKP phase, encrgy through inner core esti-

is
earlier increase the that that phase core, but outer rela- to the travels as S-wave energy month exactly in com- event earth- 4 station Mean map. illustrate: compression E-W and S-wave; f) time, arrival P
in
Earth abrupt suggests waves as liquid the from wave the solid London. A occurs second magnitude seismic (Greenwich of N-S first origin the for waves.

the (“PKJKP” outer the (compared in a of the Z, P-wave; e) the
of an interpreted the from phase motion, the many GMT On quadrants Draw motions surface
side velocity energy as of expected travels as compressional energy (Fig. 3.19) through recorded fault for be how directly south 6:00 km. fault. first include first of the
other 7.28), suggesting higher been composition change change (Figs. 2.7, 2.8). than (“K" and “P™ again). The SKJKS phase is of London to is 1000 is corresponding the
the have S-wave phase the te and type ; fault, time for arrivals: d) seismograms phases, correct of dispersion
on and 7.36). This to arrives sooner PKJKP phase in Turkey same in equivalent origin epicenter solution
arrive Figs. 7.27 (Fig. arrivals (converted) chemical The pressure. analogous mesophere phase to shear wave occurs the with recorded be would Andreas San The the to the b) fault; mechanism following your sure four portrayal

Seismology P-waves weak in phase depth km weak Some 0). as core same the has greater thus is stiffer the to PKIKP material. b) The wave energy 4 magnitude earthquake, waves the will earthquake the along page). next (map, Bend from the along focal the portraying (only) Be wave. of the each for a

Earthquake Some (“PKIKP” 5100 # (u inner the inner core under is core inner asthenosphere is through solid (“P” and "K”). is partially converted surface as compressional of 8 magnitude place. larger much first? the 8 magnitude quakes occurring simultaneously? occurs Oregon distance the offset of the ¢) Rayleigh time of arrival seismograms, and

Core about at solid is through it solid Evidence fora solid inner core.a) The inner core. earthquake a same How to pared A earthquake Bend, Time), and sense the dilatation: seismograms wave; g) mates three all

Chapter 7 Inner expected than velocity in core inner travel Fig. 7.27). The because solid the to core soft tively the “I” portion returns to the and EXERCISES An 7-1 later, the a) b) An 7-2 in a) and Love on

218 7.36 Fig. 7.28). because mantle and outer core mantle the
FIGURE the (“J"), then both in