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

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106 magnitudes are listed as mb magnitude3 but their methods for computations of magnitudes differ. In Table 5 under the source codes GS and MOS, references are listed which describe how these magnitudes were computed. Some magnitudes were derived by local institutions during this project and a description of these computations follows here. Argentina: Both m 1 and M. magnitudes are included. A description of these magnitudes is given in Cartaena and Castano (1973). Bolivia: .lagnitudes (mb) reported with the source code SCB were derived from M 1 magnitudes as follows: mb = 0.65 + 0.89 ML (.) The ML magnitudes in this relationship were determined using the following relationship: ML = log(A/T) + 1.8 log (A) + 3.5 (2) where A is the maximum amplitude in microns of the S-phase from the short period seismogram and T the predominant period for the same train of waves; A represents the epicentral di:utance in degrees and 3.5 is the scale correction in order to match the Richter definition. Other magnitudes are also listed with the scale codes &, F, and M. Magnitudes with the code G are ML magnitudes whiuh w,'re calculated using equation 2 above. Magnitudes with the code P are mb magnitudes converted from M s magnitudes reported by Pasadena using the following equation: mb = 2.37 + 0.56 M s Magnitudes with the scale code M are ML magnitudes converted from maximum intensity (Io) on the MM scale using the following equation: (3) ML = 1.08 + 0.6228 I o (4)
Brazil: Magn!tudes (mb) were computed for many events using either macroseismic or instrumental data. When macroseismic data were used one of the following equations was applied: M 1.63 + 0.60 log (At) (5) m b = 2.29 + 0.55 log (AIv) (6) where AF is total area affected in square kiometers (corresponding to the intensity II MM Isoseismal), and AIV in the area within the Intensity IV MM isoseismal. For earthqupkes with invtramental data for d betwcen 200 and 1500 km the following equation was applied: m R " log (2r AT) 2.3 log d - 2.28 (7) where mR is equivalent to A computed using regional data, A is the maximum amplitude of the ground motion in microns, T is the approximate period of the wave in seconds correspcrWn g to A, d d is the epicentral 'Usta.,r" in km. Chile: Magniudes given with the mignitude scale cede E were- ns.imated based on intensity data. For a description of instrimentally de,.ermired magnitudes for the source cacde GUC sec Lee and Wetmiller (1978). Colombia: Magnitudes (Qb)reported with the source code IHE were calculated from the flo'wing equation: mb - log(A/T) + 1.35 og(A) +-0.77 (8) M. magnitudes with the source code R-i were evaluated by Fr. J. E. Ramirez from intensity data. M, magnitude7 reported by IGN were also determined from intensity data. As bcst, :;an be .'tre
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Centro Regional de Sismologfa para
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Este trabajo se publica con el ente
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INDICE - CONTENTS DESCRIPCION DEL C
Page 7 and 8:
Pals Coordinador Investigadores 2 R
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'4 Todas Ias intensidades 1istndas
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individuales. Esto requiriA definir
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8 mb = log (A/T) + 1.35 log (A ) +
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10 Modificada o MSK. El investigado
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Conclusiones 12 Los catilogos unifi
Page 19 and 20:
Introducci6n 15 CATALOGO DE TERREMO
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17 Los criterios de selecci6n de ev
Page 23 and 24:
4. Torremoto Stdin .i Cl ino del 3)
Page 25 and 26:
INTRODUCCION CATALOG(O DE TE KREMOT
Page 27 and 28:
23 A 0 ML = lig A/T + 1.9 log + 3.5
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25 A partir de 1982 los datas sismi
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27 m) = 1.63 + 0.60 Jog (At), 6 i b
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29 SADOWSKI, G.R.; CSORDAS, S.M. &
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A Ia colmna 131 (WFn6munus s -t , n
Page 37 and 38:
3 KAUSEI,, E. (1979d). Terremoto do
Page 39 and 40:
INTRODUCCION .'5 CATAIO(;O DE .1ElI
Page 41 and 42:
37 se pretendla adem~s elaborar lis
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eA. arclivo del InS.-LAtti) (eolisi
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ESt'ASA-CAI.I'.- ,i, r'pvdia Uni v.
Page 47 and 48:
INTRODUCCION I. Investigadores clab
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7. Io t ermi i (i ojliiao s i dad !
Page 51 and 52:
INTRODUCC1ON 47 CA'ALOOI ) I)t.E TF
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4Q) ciertos recientes evento:s gi a
Page 55 and 56:
INTRODUCCION CATALOGO DiE TEi,;RNI,
Page 57 and 58:
la interpretaci6n de descripciones
Page 59 and 60: fuente du a"lorl;a B; (tp ignaJ~l m
Page 61 and 62: )'''n4'Va,!o "IN't; MK3, n importtn
Page 63 and 64: 59 I so ejemplifican algunos tomado
Page 65 and 66: a"lt or i6 at Ias' primrdB JleM ros
Page 67 and 68: DESCRIPCION DIE ENT RADA.; IV,N , C
Page 69 and 70: APFICE1 f A (CihnL inaari 'Si) (>I
Page 71 and 72: APENDICE A (Continuacj6n) Columna r
Page 73 and 74: APENDICE B (Continu cin) Co ,,_ i t
Page 75 and 76: Tipa do Hlypocent:ro V.digo SISRA T
Page 77 and 78: ' ipo de Cd igo Ilypocentro STSRA n
Page 79 and 80: 71, EGR Egred, J., 1M8, Breve hiq;t
Page 81 and 82: 77 Colombia y en la Cuenca d la Ama
Page 83 and 84: 'FAiLA 5 - tCHDI T ,IA W FUENK:TES
Page 85 and 86: TAG Uniiye rsia IN(( N;wci on.i (.'
Page 87 and 88: 83 TABLA 7 - INTtERPRETES APO Oscar
Page 89 and 90: 711 No not nd. ,.a(~ i n V-npz;o Ia
Page 91 and 92: x / TABA F.- K Fi! N(:IAS 101 Infor
Page 93 and 94: 31i3 lescotes, P.M., and Cahr,', Gc
Page 95 and 96: 422 Polo, J.T., 1904, Sinopsis do t
Page 97 and 98: P.114411 > .iII, 11.Ci'144 1 P . ,
Page 99 and 100: 9 5 REFI EN(CI AS CITADAS Bath, M.,
Page 101 and 102: Introducti on 97 SOUTH AMERICAN HYP
Page 103 and 104: 99' Country Coordinator Investigato
Page 105 and 106: 101 is provided for four, magnitude
Page 107 and 108: S03 These bulletins, for the time s
Page 109: locally which actually fell in Colc
Page 113 and 114: intensities but also the distributi
Page 115 and 116: assigned the iJntonnsity value is a
Page 117 and 118: Shallow: 0-70 kms. S11 Intermediate
Page 119 and 120: 115 compiled, is to more clearly de
Page 121 and 122: INTRODUCTION 117 CATALOG OF EARTHQU
Page 123 and 124: I 9 The criteria for tbe selection
Page 125 and 126: 121 Mendoza: Vil].a Atucl and las t
Page 127 and 128: INTRODUCTION 123 CATALOG OF EARTHQU
Page 129 and 130: 125 M = 1.08 + 0.62 fmx 2. Intensit
Page 131 and 132: 127 and Sternberg (1953) who compil
Page 133 and 134: 129 mb = 1.63 + 0.60 log(A t), or m
Page 135 and 136: INTRODUCT I ON 131 CATALOC OF EARTI
Page 137 and 138: INTRODUCTION 133 CATALOG OF EARTHQL
Page 139 and 140: 1.35 later investigation and for th
Page 141 and 142: t lh, l .'a lua11t-io ,Fi i- t ii.
Page 143 and 144: 1NTRODUCT ION 1. Participating: 139
Page 145 and 146: 7. l)eterminat ion of inten, it rie
Page 147 and 148: ]1 3 sources that appear i the refe
Page 149 and 150: informna tion. For pl;.ce: who.o i
Page 151 and 152: 47 in thu conmpiliation presunted a
Page 153 and 154: ii) Every evnl or : Bra:zeo, and fo
Page 155 and 156: is adopted. where: 151 From the equ
Page 157 and 158: 153 TAB IF N ° INTENSITY OBSERVATI
Page 159 and 160: V n u la (1971; 107'); The 'imes At
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11 / A 1'P!' I')IX A DESCIIlPTION O
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APPEYN X A (Continued) Columns Head
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1,1 APPENDTX A (Continued) Columns
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I 63 APPENUITX 11 (Continued) Colum
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Type of' Hyuoeenter I n 3 t r u m e
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10 7 TABLE 3--.DEPT!H QUALITY FACTO
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'rAILE 4--(Contlnued) EDR Earthquak
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i I I TABLE 4--- (Continued) MOL Mo
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TABLE 4--(Continued) Wt3 Bachmann,
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t 75 TABLE 5--Continued JGG Grases,
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I i7/ TABLE 6--MAGNITUDE SCALE CODE
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IILBV P. liuaco, W. Lescano, A. Buo
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TRMl Trinidad Station, Trinidad, We
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211 larrington, I.j., 1944, Volcano
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185 405 1952, Rmto!; s i,,ivoi 6 gi
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187 436 Espejo, G., y fluaco," P.,
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I8H9 916 "'El Naciuta'l", (Pt ri 1i
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191 Needham, R., ard Steele, A., 19
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