Thc Kushmur (Tur'shiz) 1903 .!Uni Torbut-c Hcidnriyeh (Sollth) 1923 cnrthqllukes in Centrnl Khornssnn (Irun) J. S. '1'CHAI,E:-KO ('l') Receivell on Selltembi'r 20th, 1972 SU,IUIAltY. - Xi'W bibliographieal mlll fielll data ari' prt'st'nh,tl on two little·known earthquakes w]lieh OCCUlTPll in thc Khora~sml Province of Iran. The Kashmar {Turshiz} eaI'iltquake of 25 Fli'ptember 1003 dpstroyp,1 part of the llI'escnt.day town of Ka~hmar anrl some SU!Tou)lllinp: villap:cs and killell 200 people. The Torllat·c lIeirlari:reh earthquake of 25 )Iny 1923 dcstI'oyctl comilletdy ;) yillagcs south of Torllat·e IIcidariych and killi'd 2,210 people. Both these i'arthquakes and a few o1hcr sllJUller on('s after 1900 llI'csent the chal'aderistics of bcing 10cflÌcd on or near the nctive Do· l'uneh Fault, of having moderate magnitudes beiween il and 6. of being very shallow ant1 responsible for high intcnsitics restridctl to arcas less than lO km in maximum tlimension. RIASSL'NTO. - In qUi'stn nota sono riport.a1i nnovi dati ra('colti bi· bliograficnnJCntc c in loco concernenti due terr(,llloti 110eo ,"onosduti, n\'· venuti nella Provimia di Khorassan (Iran). Il te1'l'ellJOto (li Kashmar (Tur· shi?) dci 25 Settemhre IOn3 tliHtrusse parte della attuale cHti~ Ili KHslllllar e alcuni villaggi circostanti l'ausando la morto ,li 209 lll'rHone. Il tenelllOto di Torhat_e Heitlariyeh del 25 J\faggio 1023 (listru~se completamente cinque villaggi n sud dclla eitt:\ llrovocando la morti' Ili 2.219 pcrsone. Entrllmlli i tenemoti elI alcuni altri d'intensitil minore llopo il 1900, )lrcscntllno Ic seguenti cllratteristiehe: sono loeali?zati sulla o vicino alla fllglia attiva di Doruneh; hanno una magnitUll0 modcrata com)lrpSa fm ;) e 6; sono molto superficiali e di elevnta intensit:\: mcntre l'area mll['J'osismien interessata ò, nella sua massimH dimensione, in[erio!'C ai lO km. {*} Engineering Seismology. Imperial Collegc. London SW7 {Englnnd}. 31J .1, - I:\' T Ronl."r:;T l o"ì l,l (;clIl'ml \"t'I',\' litUt, !ll'Cd,,~~ infol'llJation has lX' l'n I1n('ov(ll '~' d t,o dat.e on the ma Il,\' I!eli tl'llelive e:wt.lu I11 f1 kt'lI k lltl\\' ll t o havc o('e,111'}'t·t l i n Ihe K hol'- a."fI:UI l'rovi lU'c (lf TI~ tn el. "hi.'i !:wk or in fol'ln u.ti u ll ii; Il:utic ular ly ll<' ute fOl' tlw l'cginni; fl,\\'ao)' from t ltc lal'I.'l.'S t pUlIulati o ll (,.,n trcs o r :\Ias lt ad a mi ~il; h;j.PIll· iII t. lt e nO l'lh limi Qain :u HI Hirj: u u l i n I-It e litlllth , anl l g l'ca l-l." im pt"l los t! 1() a ~ i;(\SS JJumt, oC I-he ('a d .\" r c:.r iona l HeiHmi ei t y or c as t Iran. Tn th e na~ht,- t~ Bayaz :ìlHl GOllltlJ:ul lH\sinll whie h wel'e II cY as1atml h,\' Ihe c!1l't-hquakt! or HHiK, ana il! tlt e Ka .. lllnal' anll Tol'- h at -!' lIeillariych l'ogiol!, i t b unly aftlll' ahol1t H)OO t- ha.t t.he dala 11 l'r'omes ~11{fi('icntly 1)l'lI('iSt, tll Ile IllIerl ill sei,~mol,(! rt,olliC' anl\ lIeill111ieity .'It1Hlil',~. In t be latt.cl' l 't~ :..d Oll in partieulal', rlC-lIpite n, l'ceon!el"1 legelld w hi ch mCllt,io li S fl't' llll l.'lIt tl c\, :l i; tatin g eaI'U1 1Iu :tkc>i ( ~) a lll i t,be III'I:'SC IU'C ur f,he m :ljlll' lIct ivc Jh' I ' un~h F n.ult, on l)' I WII Ilesll'll('t. ivt'- f\: 11't.hq llakc>i arc k llown iII a n)' tlel.,ai! , th e Ka s h m a l' (Tul'sh iz) e:.II"t. hj·lu a k c or .l!I03 a ll i I t,he Turbat-e_ l1 (': ill;~l'i:r(!h (so ll t h) ea rt hq uake of 192:t Thesl~ t-wo evcnt,<; thns t ~j.ke on a SJll' (' ial impol't. ... n<'C il! ~ t,lLdit\!j u( l'~g-ion:ù se is- lllidt~·, : ~11I1 it hN'um~'s e~lIential that they shullW he tloC'llme·n Ì('ll HS ae('.nratd~· 11$ po,~.<;ible , bliog'l'aphical allrl fl eIrl T h e present. llok .<;nmmal'i~efl .'Io nw new hi- 11 atn on t.lw~c two eal'thquaktl,~ anrl on sOllle kmHllel' cal'thqlmk(lJ) in thc )'eg-ion. 'rl1(~ teet nni('s or tl w K ashmal'-Tor hat-e H e ill:n i," c h r egiOl I a rl:'- Ilom illa\cti b,\' th c noruneh Fan lt" a majOl' (l l~'nl(' l! t. i n t.ht> st,nwtm't> or Iran, s e('olHl onl.\' in impol't.alH'e to tl w Zag'WIj j'Thl'mt" in tlle kO llthwest of t,lw couutr y, In t-he regi 011 eOll >iitl el'ec\ h e re, th e nOl'llnch :l<'ault il; lm)aIU,\' east·w()ljt, il! 11il'cet-ion anrl eOllcave towal'l\fI thc sollt,h (I!'ig, l ), Tt lIepal'ate>i tl le Kul l- e S11l'kh mOUlltail! l':\n:.rc i n t he nOl't,1t from t,lw !\. aVil'-(l X;lIllll k o ll.->;in in t !w Ijunth a H/l c l'USSC:> ove r most uf it-s le ng th UI:'Ci 'lI t, a tl ll t'out.c lllponu 'y lit'llinwnt fall fO l'nmt.i o ns. A rccellt fie lll ret'1J nn :dAAall('C tl1 t lll' l'tl/!iOl l fl1ll11 ll evi ,lcn~e that t ht, la·tt·s t, I li ~l ,la('t'mell ~ Oli t.ht,_ fa 11 1t were ]lI"etltlllli na llt ly Yt'-rt.i ca-I amI iII tll e fl ellflC- uC l']e- \' :~t.in:.r t.h(~ Ilurt.hcnl llluuntain hl o('k lI" it.h n 'lsl't'l't- tu T UE " MWll .l.1( (T t:RM IIZ) 1903 ,1:'; 0 n' IUUT- I-: II Klll All l rE U (l'OI,;TII) BT. 3 1 l<'ig. - KA 9TD! AR·ToRlIAT.~: ll~IIl.\ltl\EII REmo:.;. l. RcgivlLS ll huve 1500 m: 2. Donm cll F:IUIt : 3. l i agnitllli c vC i!lii t,fu rnc ntall.\' Il cll!J'mi nO!I C1lr Ulq ullk es: -J . E picl' lItl',.1 l'c~rjon o f flcs trud.iv(l 1 ~ :lI' l-Il'l uakc: lu.tehed, v ill llges nffcetcIl ; f'roas· h:lldICII . vill llgcs co mlll ete l! .I estroyt'fl , tho ba,~ in (1 ! ), The readel' is ,,1.<;0 ['eiorre.t! tu Wellman (l~ ) awl (bnsser ( ~) f.)]' more informatiull 011 tllo tect o[)icll oI thc region. 2, - IC,\SIBL\R ('rrnsIlIz) EAJI'I'llQl'A KF. , 1903 2.1 DUC'III/!(' lIfn l s7t(}('h iII 19O:! (/1/(1 1.903 A re\\' shoc.ks ll l'e kllO \\"1l fO I" t,he pre-in ll ll'IIJUf.'nt~l l l Wl'iod a s t!u>.r W\Jl'O l"o)Jo!'t,ed b y Alnll1-1.O\' (1 ), the J'u~~ia.fi militlll'Y f{O('f,OI' I·o~ ifl e.nt- o 32 .1. ~. TcnAI.E:\KO in 'l'ol'bat-('· Heillal'i.\'eh a.nd in chal'g'e o[ met.ereologieal, seismologie~1l a·nd intRlligmlf'1' information. 20 ,Tnl'y, 1!J02: t;wo comeeutiye shoeks damagell ~ome honses n.bont '7 km nOl'tlnHst oi TOl'bat-e IIeilbl'iyeh in Un<1-e Majan. The sho('ks were not feH, in Torbn.t-e IIeidariyeh (1); 10 ,Tn.nlUu'y, HJO:,; an eart.hquake oeenl're<1 n.t 13 10 18m IoeaI time and was felt with intensity IV (Rossi-Forl'eH) in 'forua.t,-e Heidal'iyeh. rt wa~ most. seyel't< in }lowIetabn.d 28 km east oi '['ol'ha.t,-e l-Il'itln.- l'ireh, uut did not, ('anse any destnlCtions (~); Hl .Tune, Hl03: a slight shoek WllS fdt in TOl'bat-e IIeillal'iyeh (2); 20 .Tune, HJ03: a sIight. shoek '\"a~ felt. in 'l'orlmt-n IIeilla.riyeh ( ~ ); 21 June, 1!J03: two shoeks oeeuned at. OHh 138 m, the fh'st, 0I1e being of intensity Hl (H ossi Forl'eH) in '['ol'ha.t,-e l-Ieillal'iyeh (2); 23 .Tune, Hl03: n.n 1'n.l'thqnake occurred a,t. :?3 h .t-8 m and was ielt with intensity Y (Hossi-ForreH) in 'l'ol'bat-e Heillal'iyeh, Tht< in- hahitant.s ilell t.o t.he st.l'eet,~ (2); 21 .Tune, Hl03: n. shopk was felt at 01 lo 03m (2). 2.2 J((!.shma.j" (Tw'shiz) ca'i'thqwrJ.e, l[JO,~ The ea,l't.hquake oee\1lTell 011 the 25 Stlll'Cl'c.1 about 8 km SO llthW (>Rt. of TOl'bat,· e 1I1!irbll'iyeh. ('()ntI'Hl'~' to th c iIHli('at,i()n~ oI ~cveml eal't.hqllake catalolinll'~ , [Bit·hE."l'jO( (In), l'ClleatPI! h~' H(>ZilnOy ("), allll ot.l ll'l's ], thc town it'4(> l! W;l ~ !lot. all'ecte!! allli .!ill Ilot .~ ull' el· all~' ca'.m:\I t.ic.<;. !-fowcvCl', l~S 111 1\ e,"c llt. ii; :ùn·lul:.' knOWIl il ", IIIC " Torhat-e IIeidar iyeh carthqU:lkf''', tilis Il li nte w ill lH> rcklilwd ilere with Ihe :HI.li tiOI! of "80Ilth" to itulicatl~ that· f,he earthqU:lkc :l ll't'c tt •• ! :I n'/.dull $tm UI of t,}1t~ tOWll. Fig . .2 - RUlllòs O F QAI .'E II sow V1f.L.\~E DE STROYI!:P l\l" TIl Yo )!) 2 3 E AIITII· Q.UA liE. 'l'he villn).:"c wa~ at the HOlltl1(J:l~t.cnl Iimi1. (lf the elJic cutm l rcgioll all(l wa~ only }Hll't.inlly twll(' n the .lilt cre llt villages :lllli compal'isun lrith the occas iom~1 COI!t<>m]>Or.lJ]" lJl'C ~S l'HlJOl't, t,hl' reliahili ty or t.hi ~ information W!\-" gcne11l11y IOlllHl .T. S. TC II.-I. LE">KO to be high. The epi('cntral rl'hfÌon was Iocatcù along) a.nù south of, the J)ol'1ll1eh Valllt, a.nù incIuùcd il yillagcf! which werc COml)letely deHtl'Oyerl: Ifoz Sorkh (forme!'ly )Iurtazayil'h), Gujll (formcrly Kuzan), Khnrg, 'l'aghiabatl and Kaj Da.rakht. ("Fig. 3). The rlestrllction dccre- a.f!cII ]'apidIy fliway [rom thif! region: in Buriabad, nlflony houses eol- lapscù, but the l\losq1H' still stal1lLing tO-llay suffered pmct.ically no liamage at. all, a.I1II in Qal'eh Sow ollIy one haIf of thc houscs neerled reconHtruetion (Fig. 2). In Slmdmchr, onIy a. few houscs eollapseù l'ompletPly evcn though the village was eventually rcsct. south of its originaI l)osit.ion. Casllaltics allli approximatc l)Opula.tions of the time for theHe villagef!, a8 rememhcrcù by thc sun..-iving inh abitanh, were fIoS follows: Boy. Sol'l{1l (:ì\lurt.a.zavich) killcI} 170 l)OPuIa.t.ion 300 Guju (Kuzan) 300 'TOO Khlll'g 110 :300 Ka.,j Darakht 'TO 175 Bul'Ìahatl 64 GOO ' QaI'eh Sow 8 100 Shaùmchr :37 650 'l'hc fIo bove list is not eomplete as some of the .. -illageH al'Ollll(1 the Cl)icentra.l rpgion wcrc not vi,o,itcd a,ml othcrs l)rOùuecd ilH'omif!tcnt ]'esuItH whieh werc not considered sufficicntly rcIùloblc. Furthermorc, a few villages a.re to-ùa.y no Ionger inhahiteù (eg. Taghiabaù), anrl otllers 'which hea.r multiple na.mes (eg. iloz Sorkh-Murta.zavieh-Sa- Ilmha.ll) may indicate tlla,t after 1923 somc villfloges wcre regrollpcd ra,tllcr tlmn rebuilt inrliviùually. In view o[ these considcrations, the offidaI figUl'e of :3,219 killell a.nd 170 severely injm'erl given at thc time by thc GO\'crnor Gencral sccmH ren..'JonahIe a.11I1 moreover corresponds t.o thc impression gained from contl'mpor flo ry news report.s (l~). 'l'hc cxtent of the area. where Ilama.ged occurrcrl can be deHncri quit.e accurateIy a nù docf! not cxcccii lO km fl'Om ea.st to west all(I 5 km [rom north to south (Figs. 3 al1l1 4). (Jutsiùc thi,o, a,rea, damn.gc "\H1f! inf!ignific~mt or nil; Z;a.nueh, Zarmihr, Z;allimbaù ami Islmnda,rabad, sihmtell rcspectively lIorthwcHt, WI'Ht, sout.hwest lmù 80uth Slmdmehr a,nù alI lcss than lO km a.way Irom thi,o, village, were 1)]·a.ctica.lly un- aiIected. Similarly, .Alahahad, Hituated about lO km sOlltheast of • 1 02 !;;i;l3 _ I. _ 5 ...----6 ,.., 7 .. /8 0-4 ' • .. Fig. ::I - El'ICE!'Tl\,\L REGIO", OF TIIE 'l'ORBAT-E lIEJl)ARIYEII (~OUTtr) IDZ::! }~ARrHQUA"g. 1) Villag() \lest.roycd or dmnagct1: 2) M l hut \lIlinhahitpt1 io-rlay: 3) apPl'oximate region of tol,HI rlcstrlll'tioll: 4) fault: 5) youngest fault iT:lec: 6) ghcam 1wl1: il ~!aslliHl-Bif(lj:lllt1 ront1: Xl 'Innat. .J. ~. TCIIALESKO Qal'eh :\ow, and, a~ already mentioned, Torba.t-e Heidariyeh, ,,-ere lllldamage(l. J~xCel)t fol' a· HinJ{le unconfirmed l'e]Hll'Ì. of liHflurefl neal' Kaj D a - mkht, no ea,~e,~ of W'OU1Hl fmetlll'itlg of any kind were notiee(l at t.he time by the inlmbitants, Vlow in the (janf\Ì,S waH Ilowever cotlsistent.ly repol'ted as haYing significantIy inrrea,setl, in pal'ticular in Burialmtl, 1-' Oli i'iorkll, Khurg and G-uju, In lskatldamlmd, a qanat ,,-hich !md been dry for some time befOl'e t.he eart.hquake, ,~tart.c(! flowing a.gain. 4, - EAR1'IIQUAKR OF TT-IR i) OCTmmR, 1962 .. \fter 1923, otlly one eart.hqlla.ke is known t.o haye rf\nsetl Home de~tl'urtion in tlle rejlion,~ rro~Hrd by the DOl'uneh Fault. It. orclll'l'ed on tlle 5 October, 1962 aIHl the illHtrumelltal el)icentre was locatcd sont.h of the Fanlt. and a.bout mid-wa.y between the 1903 ,W(! the 1923 event~ (Fig. 1); the m agtlitude was est,imated at 5. 'l'he yillages of Alllnatlabu.l, Malnnalad aIHl Rizteh (!) flitllat.cd in a l'egion abont 10 km south of the instl'llmentally tletel'minetl epicentre \Vere ~eyel'ely da,mage(!. 6 ]1eo]11e were kille(! and 3 injured, most of tlle pOlmlation Fig. 4 - 1923 1.;r!CESTRAI. REGIOK SEE'\ FRO~[ ~'IIE EA~T. 'l'hc ncal'cst villagc (lcH) is Burialmd amI the furthest, Kaj Darakht. 'l'hc fauH 7.OIlC lm~Bc~ cast (l'i;.:ht) of thc hill hchind !Caj Daral,ht, and ('rossc~ Lhe Sllast Darreh floolllJlain towards the cCllll'c-l'ight ellgc o( the photogrnllh. TH}: KASIDfAIl. (TURSI!IZ) 1003 .iND TORBAT·}: IIEIDAlHYEIf (SOl'TU) ECC. 3D Imving apparently been forewHrnel1 by a fOl'l'shock nhout 3 minutes before the lllain shock (a). 3. - CO::'\OLUDI::'\G RFDIARKf'> The 1903 all(1 1923 ea.rthquakcs have several points in COllllllOlI. They ea·eh afIectcII small arcas sihmt.ell a.long, antl illlmetliately south or, the noruneh fil.111t, imI l probably not exceeding ahont 10 km in large~t. Ilimension. Epieentra.J intensities were high in thefle areHS even though the magnit.utles were only moderate (;).5 to lì in the 1923 earthquake) illllieating very f\hallow hypocl'ntres. 'flw shoeks neal' 'forba.t·e Heidariyeh in HI02 and 1903, and the earthquake or 19ti2 alf\o atIeded very loealizetl a.rei "<;, anll the other instrl1mentally tletermined earthql1alces in the region are an or ma.gnit.lllle ti or I1ntler, ,dth one exception on 4 May 1940 '\'it,!l magnihuIe IJ.;) (Fig. 1). :More Ila.ta on Ilre·1900 earthquakes is howeyer reql1irel[ to esta.blish '\'hether tllis tn1e of earthqlla-ke whieh seems to be C'lmmetel'istic fol' the region dul'ing the 20th eentnry alf\o llrevailell Illlring eadier times. AOKl'OWLEDGEME.:\''l'S 'l'he fielll '\'ork re})orted here Wi "<; nnllerta.ken i>8 part of li joint. project between the University of Mashatl antl the Engineering Heis- mology sect.iclll, Imperial College, the latteI' being supported for this work hy il gmnt frOlll the National Environmental Research COUlH'il, I,ondon. :Many tliseussions in the field amI offiee ,dth )1. Berberian of the Geologieal Smvey of Ira.n, allll Il. Belumdi or t.he Uniypr.~ity of l\Iaf\hall, with whom a generalreeonnaissanee of tlw eastern Doruneh Fault W11.S underbken il.lld pllhlishetl (f\ee Her{')'ences), amI ,\"ith A. lI Iohajer·Asjai, were ai- the Ol'igin or the st.ndy llresentetl here. REPEREKCEH (I) AUIAZOV V., HlU-l-. _ :;pi~nk zClllletTiH~t'lIii, H102. Izy. l'ost. 'J'sclIt.nd. i'iCi8111. KOlll, l, Il. 112, St. l'etcl'sbUl'g. e) AL~IAZOV V., 1905. - Spiso!;: zellllctriasl'nii, 1903. by. Posto 'l'spnh'al. :5cism. KOlll, 2. pp. 14, 11-1-, 115, 157, 15,'\, 232. M. l'etcrslJ1lI'g'. 40 .1. s. 'rCIlALl;;~KO (' l A)IIl[{'\~EYS X. X., I!Hi3. - 'l'hl' Huyin Zarn (Iran) l'artl/quakc 01 Be})- I('mbe/" IV/;:!: (/ jìelll repor/. "Bull. R.eiSlll. Sor. Am.", 53, 4, pp. 705·740. (' l .bIHIUHn:s X. X. awl 'l'CJIALEXKO ,r. S., 1!)(j!J. - The Dahst·e })ayaz (lmu) cl1rlhqlwkl' Dj AlIgu,r 31, 1905: a fie/II repart. "13nll. SciSIll. ~O(·. ,\111,", 59, ,:i. pp. 17,31-17!J2. (~ ) ,\'l'LAS l';';i:iH, lDH2. - ... lllas o/ l'(/Tlh.(lU(/ke~ in the FSSE. "Arml. Sci. l'::;::;U'' HHi2 {in russiiln}. (" ) (:A>,;SSEH A., IllUD. - 'l'hl' laTge l'ar/hq/wkl's 01 Iran allli I1I1'i1" ffl'%lJical trii/ne. "Edog-ac (:('01. Jllcv,", 59, pp. 4.,1-3·46fi, (' ) LE i:)TRA"Gt: G., HlO;j. - Thc 1,(//1.118 01 lite E(!s(ern ()nliphntc. "Fl'ilnk l'asi> !1IH! CO. LM.· Lund"ll, 31'(] illlpressioll J !J(j(j, pp. 530, (~ ) ):1AJlAVI S., H172. - .'i'he SeiHmicily DJ Iran, M. Sco Thcsis, l~nivcrsit.y or I,OIl!!OIl. (' ) Ih:zA;<;ov L A., lO;;!). - 'l"edo/tics anli 80ismici/y 01 Iho 'l"urlancllo-jllw- ra~s(u1 .l/ounllli/Is, ",\('11(1. i:ici. U;-;;-;H", )!oseow lO;")!), pp. 246. (IU ) SmllEm; Z., 1032. - DiI' Erdbl'llon, in "B. Gutenbcrg's T1an,lhuch ,ICI" Geophysk", 4, E,l. G. BOI"ntrueger. ( li ) i:iYlo:s l'. :'1.,101 J. -.t si.rlli journey in Persia. "Gcogr . .T.", 37, llP. J4!J- 165. ( I~ J 'l'CIIAU::"KO .I. S., BElll\ERlA~ .\1. ali!! BElIZADI H., 1!)73. - Hcismic ami geomorphic evidl'lIcc 01 recO/II ae/Illily DI/. Ilio IJor1tlleh Fmllt (Inm) . • 'l'(l('.tonophy.~ks . , ili 1H(lRS. (l~ ) 'IlIE 'InlES, LOlHlon, AllahalHul cOlTeSpOIHlcnt .. 2 .IUllC 1!J23 ali!! li .TUilI.' l U23. ( lO) \VELU1A" II. \V., 1%6. - Actiue Il"TI'IICh Ialdls 01 Iron. Atg/wllùlal/. allli l'akh/tw. "Geol. H1I!l(IR(~hau", 55, pp. 716-735.