Download
1 / 56

שמוליק מרקו - PowerPoint PPT Presentation


  • 168 Views
  • Uploaded on
  • Presentation posted in: General

הגיאולוגיה של רעידות אדמה. שמוליק מרקו. הרוגי רעידות אדמה כ-10,000 נפש בשנה. כרבע מכלל ההרוגים באסונות טבע. כרבע מכלל ההרוגים באסונות טבע - בגלל רעידות אדמה. eqs. eqs. eqs. eqs. שאלות. מהי רעידת אדמה?

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

שמוליק מרקו

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript



10 000
-10,000


5962077
-

eqs

eqs

eqs

eqs


5962077

  • ?

  • ? ( , , , , )

  • ?

  • ?

  • ? (: , , , )


5962077

1906

California 1906


5962077

Elastic Rebound theory

. . .


5962077

  • 10



5962077
. .


5962077

:

X X


Seismic moment mo
Seismic Moment Mo

Mo=mAu

A = Area of fault plane

u = average slip

m = shear modulus

Moment Magnitude Mw

( ):

Mw = 2/3 log10(Mo) - 10.7


5962077

  • .

  • .

  • . .

  • .

Epicenter

Hypocenter

()



5962077
, , 1999




5962077
.


P primary pressure waves s secondary shear waves surface rayleigh love waves
P Primary-Pressure Waves .S Secondary-Shear WavesSurface (Rayleigh & Love) Waves

~5-8 km/s

~3-5 km/s

~4-6 km/s

:http://www2.wwnorton.com/college/geo/egeo/flash/8_2.swf





5962077

P

S

  • :

    -

    -

  • (P) . (S)

Dt


5962077

D t

:

-3 -3


5962077
P -S

IST

TEH

GII




5962077

, .


5962077

3 "

S4

S1

S3


Liquefaction
Liquefaction

1964


5962077

www.iris.edu

http://neic.usgs.gov/neis/epic/epic.html


5962077

25


5962077

M>7

M>8


5962077

  • ,

  • logN=a-bM

    ()=M

    =N

    b~1

    a

Gutenberg-Richter distribution law


5962077

-100 .

100

3000

200,000

?


5962077
:

'':


5962077
:

1759

' 749

1927


5962077
:

749


5962077

749



5962077

2

1

60 '

1179 "


5962077

: 2.1 '


5962077

: 2.1 '

2.1 m

N

N


5962077

0.5 m

0.5 '


5962077

:

- 20.5.1202 1.6 '

1.6 '


5962077

:

2.1 '

- 20.5.1202 1.6 '

0.5 '

- 30.10.1759 0.5 '


5962077

1202

1759

:

500 km


5962077
.




5962077
-

Seismite


5962077
- -

W

E


18 1 749

-

-18.1.749 . .


5962077

Oct. 17, 1989 Loma Prieta


5962077

394

56

132

198

284

169

557

78

90

.

31 363

419

551749

10331202

175918371927




ad
  • Login