catalogo de terremotos para america del sur catalog of earthquakes ...

INTRODUCT I ON
131
CATALOC OF EARTItQUAES FOR CHILE
HYPOCENTER AND INTENSITY DATA
NATIONAL REPORT
Edgar Kuasel
Th, Cat alog of EaLirthquakes has a long history in Chiie. Dur:ing the past
centLury, several atthors accumulated information on earthivpakes which have
occurred in Clile in colonial oime. Generall , those coDila ti:or,.- were retated
with studles or ien ,d for Li- preparation of texts on Hlistorv and Geogrniphv
of (hile,, ralthei thin for sc:ientific purposes. Cor:ainl., K w:.
Io p, tesits hi, IV IIore ( 19 1-19 6) woi ireop red tae most CoMr,1 *¢I -, Cat : of
tie his:-torical Wr : ii c .n;t r t: lhqua ks. le greaterl. part of the hi't riv'.l cntalog,
which have been pulished lt u':, ae based nn his w umpncah Y..'ark.
;reve (196,) and Lomnit: (197(0) h;ve ,ad n t the work dton-, K , r,.su- do
Bhai] l r '- . 1'urt erifl e,
severaul int'rn ti inal
dl the first loir decades of hr pr Oin rtu nturv ,
in tiL utions ,nid uinivarsit:i vs began rhe preppratinn of
world catalogs w,,ith vilimhle informatioen elated to Chile. Tb',- information
on epicentnto rs with instrumnental data has been obtained princi pa ll,,yrrmi theM
catalogi of the U.S. Geological Survey, the Internatinal Seisologc&rmi
ry (1919,-1959), (;tit enlsr.i and Ri, ' (190'-1952), Internat or.nt l ?_'
,ical( ' YnPtand ro data fom r t e -e 'mel, ig ,c-1 Service of Me l.n ,rsi,
Ie -- l)'partm n ore, Ilo an'd Cenp '' -. A gr oup from the 1ottr ir
oione - .uis M alyear,l rin hat,(rrivnt o,-, I'F j ti - nu e] and I.k r:o Pn, ,
Sum­
,,o c­
0 Chiiitu
­
Wall
"esp-nsibip for ri-o"der iuug
11se of thp abov tiit ionei
tho dal.Tu i n a new caalo of cart hcu.&our(es
ald othetq less important. Th
. n
c -,
ping
of
intensitis was rpvised bv Luis Alvear and John Bannister, by checi,,g%infor-­
runt ion i.oinp m i led by d i fferent: authors.s
METI!OI)S I'MI1) N IHE PRIRIARAtI(iN OF- THE CATALOGS.
lie genecration of the catalogs of hypocenter and :intensities
laborious. The material used i.n documented in detail in each o-ne
-was5 very
: th, references
at: the end of this report. Here we will refer Only
criteria used to select or adopt t:he liyp ocent ral parameters.
cO .-W ,,tu O tif
For the historical earthquakes (non-inst rtl~ntma) , the epicnurn coordinates
corr'espond to the coordinates of tihe gogralphic locality; h- i:hlthe
earthquake is known (city , town ,
ItmaV be errors of F 2" i t o o t. tti
, etc.). Ti- exp.ains why -!.
of- -one of the e 'ronts. +7!*;:
r
Iod,'
of those earthquas r ir er-spond to " us tinted I', on K hf :-'' iacroseisinic
itnformiltion nal vred by Lonm itz (1970) and I iiu ci (1979r). "''. ro&d
used for tihe ma gn i tnlde ,sCaI e , in :;uch caseps, r' i s E (column 92 ) . ,h,- r...
authors have est inlat oil a rai.ge of" l851,itiides , the inmein of thS rane
to tlie nearest utppe r decimal point . The information concerning the
m15- used
time of
giin w:s olbtained from a compilation by Barrientos (198!)
(;1T.
and coosvcrte.T t:o