magnitudes, fórmulas, estadisticas, intensidades

8/9/2019 Magnitudes, Frmulas, Estadisticas, Intensidades

1/17

Magnitude 8 and Greater Earthquakes Since 1900

Sorted by Date

Sorted by Magnitude

Sorted by Number of Fataities

Display Magnitude 8 Earthquakesin Google Earth.

Date - UTC - Time Latitude Longitude Magnitude Fatalities Region

1.1902-06-11 05: 50.00 148.00 8.0 Sea ofOkhotsk

2.1903-01-04 05:07 -20.00 -175.00 8.0 Tonga
http://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/magnitude8_1900_mag.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/magnitude8_1900_deaths.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/mag8earthquakes.kmlhttp://earth.google.com/http://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/magnitude8_1900_mag.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/magnitude8_1900_deaths.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/mag8earthquakes.kmlhttp://earth.google.com/


2/17

3.1903-08-11 04:32 36.36 22.97 8.3 southernGreece

4.1905-07-09 09:40 49.0 99.0 8.4 ongo!"a

5.1905-07-23 02:46 49.0 98.0 8.4 centra!ongo!"a

6.1906-01-31 15:36 1.0 -81.5 8.8 1#000$o!o%&"a-'cua(or

7.1906-08-17 00:40 -33.0 -72.0 8.2 3#882)a!*ara"so#$h"!e

8.1907-10-21 04:23 38.00 69.00 8.0 +fghan"stan

9.1908-12-12 12:08 -14.0 -78.0 8.2 off the coastof centra!,eru

10.1911-06-15 14:26 28.0 130.0 8.1 12uku/s!an(s#a*an

11.1914-05-26 14:22 -2. 137. 8.0 est eGu"nea

12.1915-05-01 05:00 47. 155. 8.0 ur"!e/s!an(s

13.1917-05-01 18:26 -29.0 -177.0 8.0 er%a(ec/s!an(s#eea!an(

14.1917-06-26 05:49 -15.0 -173.0 8.4 Tonga
http://earthquake.usgs.gov/regional/world/events/1906_01_31.phphttp://earthquake.usgs.gov/regional/world/events/1906_01_31.phphttp://earthquake.usgs.gov/regional/world/events/1906_01_31.phphttp://earthquake.usgs.gov/regional/world/events/1906_01_31.php


3/17

15.1918-08-15 12:18 5.653 123.563 8.0 50$e!e&es Sea

16.1918-09-07 17:16 45.5 151.5 8.2 ur"! /s!an(s

17.1919-04-30 07:17 -19.823 -172.215 8.2 Tongareg"on

18.1920-06-05 04:21 23.5 122.0 8.0 Ta"anreg"on

19.1920-09-20 14:39 -20.0 168.0 8.0 oa!t/s!an(s

20.1922-11-11 04:32 -28.553 -70.755 8.5 $h"!e-+rgent"naor(er

21.1923-02-03 16:01 54.0 161.0 8.5 a%chatka

22.1924-04-14 16:20 7.023 125.954 8.3 "n(anao#,h"!"**"nes

23.1928-06-17 03:19 16.33 -96.7 8.0 Oaaca#e"co

24.1931-08-10 21:18 47.1 89.8 8.0 5northern"n"ang#$h"na

25.1932-06-03 10:36 19.84 -103.99 8.1 a!"sco#e"co

26.1933-03-02 17:31 39.22 144.62 8.4 2#990Sanr"ku#a*an

27.1934-01-15 08:43 27.55 87.09 8.1 10#700"har# /n("a
http://earthquake.usgs.gov/regional/world/events/1922_11_11.phphttp://earthquake.usgs.gov/regional/world/events/1922_11_11.phphttp://earthquake.usgs.gov/regional/world/events/1922_11_11.phphttp://earthquake.usgs.gov/regional/world/events/1922_11_11.phphttp://earthquake.usgs.gov/regional/world/events/1922_11_11.phphttp://earthquake.usgs.gov/regional/world/events/1922_11_11.php


4/17

28.1938-02-01 19:04 -5.05 131.62 8.5 an(a Sea

29.1938-11-10 20:18 55.33 -158.37 8.2 Shu%ag"n/s!an(s#+!aska

30.1939-04-30 02:55 -10.5 158.5 8.0 So!o%on/s!an(s

31.1940-05-24 16:33 -10.5 -77.0 8.2 near the$oast ofcentra! ,eru

32.1941-11-25 18:03 37.171 -18.960 8.2 +;ores-$a*eSt. )"ncent"(ge

33.1942-08-24 22:50 -15.0 -76.0 8.2 atoGrosso#ra;"!

34.1943-04-06 16:07 -30.75 -72.0 8.2 18off the coastof$o


5/17

38.1946-08-04 17:51 19.25 -69.00 8.0 100>o%"n"cane*u&!"c

39.1946-12-20 19:19 32.5 134.5 8.1 1#330anka"(o#a*an

40.1948-01-24 17:46 10.5 122.0 8.2 72,ana#,h"!"**"nes

41.1949-08-22 04:01 53.62 -133.27 8.1 ?ueen$har!otte

/s!an(# .$.#$ana(a

42.1950-08-15 14:09 28.5 96.5 8.6 1#526+ssa%-T"&et

43.1952-03-04 01:22 42.5 143.0 8.1 31@okka"(o#a*anreg"on

44.1952-11-04 16:58 52.76 160.06 9.0 a%chatka#uss"a

45.1957-03-09 14:22 51.56 -175.39 8.6 +n(reanof/s!an(s#+!aska

46.1957-12-04 03:37 45.15 99.21 8.1 Go&"-+!ta"#ongo!"a

47.1958-11-06 22:58 44.329 148.623 8.3 ur"! /s!an(s

48.1959-05-04 07:15 53.351 159.645 8.2 1near theeast coastofa%chatka
http://earthquake.usgs.gov/regional/world/events/1946_08_04.phphttp://earthquake.usgs.gov/regional/world/events/1946_08_04.phphttp://earthquakescanada.nrcan.gc.ca/historic_eq/20th/1949_e.phphttp://earthquakescanada.nrcan.gc.ca/historic_eq/20th/1949_e.phphttp://earthquakescanada.nrcan.gc.ca/historic_eq/20th/1949_e.phphttp://earthquakescanada.nrcan.gc.ca/historic_eq/20th/1949_e.phphttp://earthquake.usgs.gov/regional/world/events/1950_08_15.phphttp://earthquake.usgs.gov/regional/world/events/1952_11_04.phphttp://earthquake.usgs.gov/regional/world/events/1952_11_04.phphttp://earthquake.usgs.gov/regional/states/events/1957_03_09.phphttp://earthquake.usgs.gov/regional/states/events/1957_03_09.phphttp://earthquake.usgs.gov/regional/states/events/1957_03_09.phphttp://earthquake.usgs.gov/regional/world/events/1958_11_06.phphttp://earthquake.usgs.gov/regional/world/events/1946_08_04.phphttp://earthquake.usgs.gov/regional/world/events/1946_08_04.phphttp://earthquakescanada.nrcan.gc.ca/historic_eq/20th/1949_e.phphttp://earthquakescanada.nrcan.gc.ca/historic_eq/20th/1949_e.phphttp://earthquakescanada.nrcan.gc.ca/historic_eq/20th/1949_e.phphttp://earthquake.usgs.gov/regional/world/events/1950_08_15.phphttp://earthquake.usgs.gov/regional/world/events/1952_11_04.phphttp://earthquake.usgs.gov/regional/world/events/1952_11_04.phphttp://earthquake.usgs.gov/regional/states/events/1957_03_09.phphttp://earthquake.usgs.gov/regional/states/events/1957_03_09.phphttp://earthquake.usgs.gov/regional/states/events/1957_03_09.phphttp://earthquake.usgs.gov/regional/world/events/1958_11_06.php


6/17

49.1960-05-22 19:11 -38.29 -73.05 9.5 1#655$h"!e

50.1963-10-13 05:17 44.9 149.6 8.5 ur"! /s!an(s

51.1964-03-28 03:36 61.02 -147.65 9.2 125,r"nce"!!"a%Soun(#+!aska

52.1965-02-04 05:01 51.21 -178.50 8.7 at /s!an(s#+!aska

53.1966-10-17 21:41 -10.807 -78.684 8.1 125near thecoast ofcentra! ,eru

54.1968-05-16 00:49 40.903 143.346 8.2 47off the eastcoast of@onshu#a*an

55.1969-08-11 21:27 43.478 147.815 8.2 ur"! /s!an(s

56.1970-07-31 17:08 -1.49 -72.56 8.0 $o!o%&"a

57.1971-01-10 07:17 -3.132 139.697 8.1 ,a*ua#/n(ones"a

58.1974-10-03 14:21 -12.254 -77.524 8.1 78near thecoast ofcentra! ,eru

59.1976-08-16 16:11 6.292 124.090 8.0 8#000"n(anao#,h"!"**"nes

60.1977-06-22 12:08 -22.878 -175.900 8.1 Tonga
http://earthquake.usgs.gov/regional/world/events/1960_05_22.phphttp://earthquake.usgs.gov/regional/states/events/1964_03_28.phphttp://earthquake.usgs.gov/regional/states/events/1964_03_28.phphttp://earthquake.usgs.gov/regional/states/events/1964_03_28.phphttp://earthquake.usgs.gov/regional/states/events/1964_03_28.phphttp://earthquake.usgs.gov/regional/states/events/1965_02_04.phphttp://earthquake.usgs.gov/regional/states/events/1965_02_04.phphttp://earthquake.usgs.gov/regional/world/events/1966_10_17.phphttp://earthquake.usgs.gov/regional/world/events/1966_10_17.phphttp://earthquake.usgs.gov/regional/world/events/1966_10_17.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/%20/regional/world/events/1974_10_03.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/%20/regional/world/events/1974_10_03.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/%20/regional/world/events/1974_10_03.phphttp://earthquake.usgs.gov/regional/world/events/1960_05_22.phphttp://earthquake.usgs.gov/regional/states/events/1964_03_28.phphttp://earthquake.usgs.gov/regional/states/events/1964_03_28.phphttp://earthquake.usgs.gov/regional/states/events/1964_03_28.phphttp://earthquake.usgs.gov/regional/states/events/1965_02_04.phphttp://earthquake.usgs.gov/regional/states/events/1965_02_04.phphttp://earthquake.usgs.gov/regional/world/events/1966_10_17.phphttp://earthquake.usgs.gov/regional/world/events/1966_10_17.phphttp://earthquake.usgs.gov/regional/world/events/1966_10_17.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/%20/regional/world/events/1974_10_03.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/%20/regional/world/events/1974_10_03.phphttp://earthquake.usgs.gov/eqcenter/eqarchives/year/mag8/%20/regional/world/events/1974_10_03.php


7/17

reg"on

61.1977-08-19 06:08 -11.085 118.464 8.3 100south of

Su%&aa#/n(ones"a

62.1979-12-12 07:59 1.598 -79.358 8.1 600near thecoast of'cua(or

63.1985-03-03 22:47 -33.135 -71.871 8.0 177offshore

)a!*ara"so#$h"!e

64.1985-09-19 13:17 18.190 -102.533 8.0 9#500"choacan#e"co

65.1986-05-07 22:47 51.520 -174.776 8.0 +n(reanof/s!an(s#+!eut"an

/s!an(s#+!aska

66.1989-05-23 10:54 -52.341 160.568 8.1 ac


8/17

e"co

71.1996-02-17 05:59 -0.891 136.952 8.2 166/r"an aa

reg"on#/n(ones"a

72.1998-03-25 03:12 -62.877 149.527 8.1 a!!en/s!an(sreg"on

73.2000-11-16 04:54 -3.980 152.169 8.0 2e /re!an(

reg"on#,a*ua eGu"nea

74.2001-06-23 20:33 -16.264 -73.641 8.4 75near thecoast ofsouthern,eru

75.2003-09-25 19:50 41.815 143.910 8.3 @okka"(o#a*anreg"on

76.2004-12-23 14:59 -49.312 161.345 8.1 north ofac


9/17

80.2006-11-15 11:14 46.592 153.226 8.3 ur"! /s!an(s

81.2007-01-13 04:23:21 46.243 154.524 8.1 'ast of the

ur"! /s!an(s

82.2007-04-01 20:39:58 -8.466 157.043 8.1 34So!o%on/s!an(s

83.2007-08-15 23:40:57 -13.386 -76.603 8.0 650ear the$oast of$entra! ,eru

84.2007-09-12 11:10:26 -4.438 101.367 8.5 25SouthernSu%atra#/n(ones"a

South Latitudes and West Longitudes are indicated by

NEGA!"E nu#bers.

Source$ %SGS NE!& 'DE catalog( Data are preli#inary.

/n *artnersh"* "th n e hr*

+&out =s

$ontact =s

Search

+ccess"&"!"tBO/+,r"Aac,o!"c"es an( ot"ces

=.S. >e*art%ent of the /nter"orC =.S. Geo!og"ca!

SurAe

=:

htt*:DDearth


10/17

Earthquakes Magnitude 8.0 and Greater Since 1990

Year Month Day Time

UT

!atitude !ongitude De"th

#km$

Magnitude %egion

1 1994 06 09 00:33:16.2 -13.841 -67.533 631 8.2 Northern

Bolivia

2 1994 10 04 13:22:55.8 43.773 147.321 14 8.3 Kuril

Islands

3 1995 07 30 05:11:23.6 -23.340 -70.294 46 8.0 Near oast

o!

Northern

hile

4 1995 10 09 15:35:53.9 19.055 -104.205 33 8.0 Near oast

o! "alis#o$

%e&i#o

5 1996 02 17 05:59:30.5 -0.891 136.952 33 8.2 Irian "a'a

(e)ion$

Indonesia

6 1998 03 25 03:12:25.0 -62.877 149.527 10 8.1 Ballen'

Islands

(e)ion

7 2000 11 16 04:54:56.7 -3.980 152.169 33 8.0 Ne*Ireland


11/17

(e)ion$

+.N.,.

8 2001 06 23 20:33:14.1 -16.265 -73.641 33 8.4 Near oast

o! +eru

9 2003 09 25 19:50:06.3 41.815 143.910 27 8.3 oaido$"a/an

(e)ion

10 2004 12 23 14:59:04.3 -50.240 160.133 10 8.1 North o!

%a#uarie

Island

11 2004 12 26 00:58:53.4 3.307 95.951 10 9.1 !! est

oast o!

Northern

uatra

12 2005 03 28 16:09:36.2 2.074 97.013 30 8.6 Northern

uatra$

Indonesia

13 2006 05 03 15:26:40.2 -20.187 -174.123 55 8.0 on)a

14 2006 11 15 11:14:13.5 46.592 153.226 10 8.3 Kuril

Islands

15 2007 01 13 04:23:21.1 46.243 154.524 10 8.1 ast o! the

Kuril

Islands

16 2007 04 01 20:39:57.4 -8.487 156.986 18 8.1 oloon

Islands

17 2007 08 15 23:40:57.9 -13.353 -76.511 39 8.0 Near the

oast o!

entra

+eru

18 2007 09 12 11:10:26.8 -4.438 101.367 34 8.5 outhern

uatra$

Indonesia

South Latitudes and West Longitudes are indicated by NEGA!"E nu#bers.

Source$ %SGS NE!& 'DE catalog( Data are preli#inary.


12/17

Deaths &rom Magnitude 8 and Greater Earthquakes

Since 1990

Date

UT%egion

Magnitude 'um(er

)i**ed

1994 06 09 Northern Bolivia 8.2 10

1994 10 04 Kuril Islands 8.3 11

1995 07 30 Near oast o! Northern hile 8.0 3

1995 10 09 Near oast o! "alis#o$ %e&i#o 8.0 49

1996 02 17 Irian "a'a (e)ion$ Indonesia 8.2 166

1998 03 25 Ballen' Islands (e)ion 8.1 0

2000 11 16 Ne* Ireland (e)ion$ +.N.,. 8.0 2

2001 06 23 Near oast o! +eru 8.4 138

2003 09 25 oaido$ "a/an (e)ion 8.3 0


13/17

2004 12 23 North o! %a#uarie Island 8.1 0

2004 12 26 !! est oast o! Northern uatra 9.1 283106

2005 03 28 Northern uatra$ Indonesia 8.6 1313

2006 05 03 on)a 8.0 0

2006 11 15 Kuril Islands 8.3 0

2007 01 13 ast o! the Kuril Islands 8.1 0

2007 04 01 oloon Islands 8.1 34

2007 08 15 Near the oast o! entra +eru 8.0 650

2007 09 12 outhern uatra$ Indonesia 8.5 25

otal 285507

Are Earthquakes )eally on the !ncrease*

Earthquake +acts and Statistics Magnitude De,initions %sed by the NE!&

he )ichter Magnitude Scale
http://earthquake.usgs.gov/learning/topics/increase_in_earthquakes.phphttp://neic.usgs.gov/neis/eqlists/eqstats.htmlhttp://neic.usgs.gov/neis/phase_data/mag_formulas.htmlhttp://earthquake.usgs.gov/learning/topics/richter.phphttp://earthquake.usgs.gov/learning/topics/increase_in_earthquakes.phphttp://neic.usgs.gov/neis/eqlists/eqstats.htmlhttp://neic.usgs.gov/neis/phase_data/mag_formulas.htmlhttp://earthquake.usgs.gov/learning/topics/richter.php


14/17

Magnitude ! "ntensity

Magnitude De&initions Used (y the 'E+

Designator 'ame ,ormu*a

%* %oent %a)nitude ans and Kanaori !orula 1979

M- #/$ *og Mo 2 10.3

*here Mois the s#alar oent o! the est doule

#ou/le in d'ne-#.

%e ner)' %a)nitude hese ener)' a)nitudes are #o/uted !ro the

radiated ener)' usin) the ho' and Boat*ri)ht

1995 !orula

Me #/$ *og Es 2 /.9

*here Esis the radiated seisi# ener)' in

Ne*ton-eters. Me$ #o/uted !ro hi)h

!reuen#' seisi# data$ is a easure o! the

seisi# /otential !or daa)e.

%s ur!a#e ave

%a)nitude

I;+I !orula

Ms *og #4T$ 5 1.66 *og D 5 .

*here

4

is the a&iu )round a/litude in

i#roeters i#rons o! the verti#al

#o/onent o! the sur!a#e *ave *ithin the

/eriod ran)e 18


15/17

a)nitudes !ro re/orted and ; data.

I! the un#ertaint' o! the #o/uted de/th is

#onsidered )reat enou)h that the de/th #ould e

less than 50 iloeters$ an %s value a' still e

/ulished$ #o/uted ' the I;+I !orula and

N #orre#ted !or de/th.

In )eneral$ the %s a)nitude is ore reliale than

the a)nitude as a eans o! 'ieldin) the

relative @siAe@ o! a shallo*-!o#us earthuae.

o/ressional Bod'

ave +-*ave%a)nitude

m( *og #4T$ 57#Dh$

de!ined ' ,utener)and (i#hter1956 ee/t

that T$ the /eriod in se#onds$ is restri#ted to 0.1


16/17

Magnitude # "ntensity $om%arison

Magnitude and !ntensity #easure di,,erent characteristics o, earthquakes.

Magnitude #easures the energy released at the source o, the earthquake.

Magnitude is deter#ined ,ro# #easure#ents on seis#ographs. !ntensity#easures the strength o, shaking produced by the earthquake at a certain

location. !ntensity is deter#ined ,ro# e,,ects on people- hu#an structures- and

the natural eniron#ent.

he ,ollo/ing table gies intensities that are typically obsered at locations

near the epicenter o, earthquakes o, di,,erent #agnitudes.

Magnitude /

Intensity Comparison

Magnitude TypicalMaximumModifiedMercalli

Intensity

1! - "! I

"! - "# II - III

$! - $# I% - %

&! - %I - %II

'! - '# %II - I(

)!an(h"gher

%IIIorh"gher

*++re,iated Modified Mercalli Intensity

cale

I. ot fe!t ece*t & a Aer fe un(er es*ec"a!!

faAora&!e con("t"ons.

II. Be!t on! & a fe *ersons at rest# es*ec"a!!

on u**er f!oors of &u"!("ngs.

III. Be!t "shes# "n(os# (oors ("stur&e(F a!!s %ake

crack"ng soun(. Sensat"on !"ke heaA truckstr"k"ng &u"!("ng. Stan("ng %otor cars rocke(

not"cea&!.

%. Be!t & near! eAeroneF %an aakene(.

So%e ("shes# "n(os &roken. =nsta&!e o&ects

oAerturne(. ,en(u!u% c!ocks %a sto*.

%I. Be!t & a!!# %an fr"ghtene(. So%e heaA

furn"ture %oAe(F a fe "nstances of fa!!en


17/17

*!aster. >a%age s!"ght.

%II. >a%age neg!"g"&!e "n &u"!("ngs of goo(

(es"gn an( construct"onF s!"ght to %o(erate "n

e!!-&u"!t or("nar structuresF cons"(era&!e

(a%age "n *oor! &u"!t or &a(! (es"gne(

structuresF so%e ch"%nes &roken.

%III. >a%age s!"ght "n s*ec"a!! (es"gne(

structuresF cons"(era&!e (a%age "n or("nar

su&stant"a! &u"!("ngs "th *art"a! co!!a*se.

>a%age great "n *oor! &u"!t structures. Ba!! of

ch"%nes# factor stacks# co!u%ns# %onu%ents#

a!!s. @eaA furn"ture oAerturne(.

I(. >a%age cons"(era&!e "n s*ec"a!! (es"gne(

structuresF e!!-(es"gne( fra%e structures

thron out of *!u%&. >a%age great "n

su&stant"a! &u"!("ngs# "th *art"a! co!!a*se.

u"!("ngs sh"fte( off foun(at"ons.

(. So%e e!!-&u"!t oo(en structures (estroe(F

%ost %asonr an( fra%e structures (estroe("th foun(at"ons. a"!s &ent.

(I. Be# "f an %asonrH structures re%a"n

stan("ng. r"(ges (estroe(. a"!s &ent great!.

(II. >a%age tota!. "nes of s"ght an( !eAe! are

("storte(. O&ects thron "nto the a"r.

/n *artnersh"* "th n e hr*

=: htt*:DDearth

magnitudes, fórmulas, estadisticas, intensidades

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