PLEASE SOMEBODY HELP ME OUT . I WILL RATE AND LIKE IT RIGHT AWAY. THANK YOU VERY

Question

PLEASE SOMEBODY HELP ME OUT . I WILL RATE AND LIKE IT RIGHT AWAY. THANK YOU VERY MUCH

DETERMINING THE MAGNITUDE OF AN EARTHQUAKE ?

LINK FOR PICTURE ------>   https://postimg.org/image/zcneuc17r/

LINK FOR ADDITIONAL PICTURE -------->.   https://postimg.org/image/4qeq9iqi5/

(A) WHAT IS Mb for an EARTHQUAKE WITH EXACTLY THE SAME P WAVE AMPLITUDE AS THE EXAMPLE IN THE FIGURE BELOW BUT WITH AN S-P DELAY OF 30 SECONDS? _______ 10 SECONDS? ______

(B) WHAT IS THE RELATIONSHIP BETWEEN WAVE AMPLITUDE, MAGNITUDE AND DISTANCE FROM THE EPICENTER ?

(C) WHAT IS Mb FOR THE EARTHQUAKE WITH EXACTLY THE SAME S-P DELAY TIME AS THE EXAMPLE IN THE FIGURE BELOW BUT WITH A P-WAVE AMPLITUDE OF 2 MM? _______1000MM?_______

(D) WHAT IS THE MAGNITUDE OF THE EARTHQUAKE BASED ON THE FOLLOWING DATA FROM THREE STATIONS CLOSE TO THE EPICENTER DETERMINED IN EXERSICE 16.4? STATION A:P-S LAG =20S, P- WAVE AMPLITUDE =100MM; STATION B: P-S LAG =40S; P -WAVE AMPLITUDE =12MM, STATION C: P-S LAG =50 S , P- WAVE AMPLITUDE =7MM.

NOTE: THE SEISMOGRAMS IN EXERCISE 16.4 ARE ARTIFICIAL . IF THEY WERE FROM A REAL EARTHQUAKE, THE VALUE FOR Mb CALCULATED FROM EACH SHOULD BE NEARLY IDENTICAL .

Explanation / Answer

(A) Mb for an EARTHQUAKE WITH EXACTLY THE SAME P WAVE AMPLITUDE AS THE EXAMPLE IN THE FIGURE BELOW BUT WITH AN S-P DELAY OF 30 SECONDS ___4.5____ ;10 SECONDS ___3.5___

(B) THE RELATIONSHIP BETWEEN WAVE AMPLITUDE, MAGNITUDE AND DISTANCE FROM THE EPICENTER

is

Ms = log10(As/T) +1.66log10 (X) +3.3

where A is amplitude

M is magnitude

X is epicetral distance

(C) Mb FOR THE EARTHQUAKE WITH EXACTLY THE SAME S-P DELAY TIME AS THE EXAMPLE IN THE FIGURE BELOW BUT WITH A P-WAVE AMPLITUDE OF 2 MM? __4.7_____100MM?__6.5_____

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