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Show The Sail I 1 ,ke 'I' vM' Trthnn ip v MiiKHwrt oi m 4j.m "E" In an s Ihm i ti. ih obsenutL.n h aiit D oi in liiiwisitv Iat hat on a hilltop i .ra h,s 1 nim s Ln St s ainuutoH ,s' ''s T"mus . 'a'1 a at lam del tMiduldt ! Hit- - observation Inns ,tit ,it,m la -- ix nnla- - lone, amt m asim-men- t' im are made daily, either, at night or i m l.tti ansnuttiiiii fi.aldit - li df.it nit to tot nt and an tor -- a hint of t itiuprossinn to t h Maim ninth along the easUoti ilank ot tin XttJStTJSZZS 3 ttXTS ALL STORES 0PENT0bAY, SUNDAY, MOON TIL 6P.F.1. Experts Use New Tools To Forecast Tremors Ueie and 'here along the fault inverted p)a-l- u .up- - have liet n set tn Ihe soil to record any radon gas percolating up from hi low In Asia uitiiineed seep me fmni deep roc k Ini motions of this shortlived, rudioai live go- - ha- - been found tn piocedt listen for changes within the earth earthquakes that warn of impending earthquakes Jacks Truck Into Air The stakes are high for reliable The lould hydraulic vibrator consists of a predictions of lime and plaee save tens of thousands of Ir.es when platform lowered from the true k car a major quake hits one of the I y mg it until it jacks the ti uck into air, not if w dh the ground pi civ uiing firm contact larger titles It then -- it- the e.irlb tiembl.ng at a The new tools include these succession of frequencies The tremors Iaisr-devices that can monitor a ire rcccnleil at a network of stations, w at ping of the landsi ape hv recording their travel times being determined hv distance changes no greater than comparison with parallel sign.ik -- cut one fiftieth of an nu h m hree miles by radio drill lhat this week will com Iliiss'aii scientists have found that, nil nee boring into the San Andri as near their bonl.'l with Afghanistan the Fault Most great California earthpiessure wave vclocUU" through north-soutquakes have occurred along that earth drum natural quakes and explo crack m the earth including the sums1 slow down 1m lore a quake ti on one in l'totf that destroyed much of San return to normal just as the quake is 1 ramiseo The hole will make possible almi.t to occur The same efteet h is (or the first time observations deep been itc oi di ii HI a region of small v I'hin the fault. quakes eenioi d on Bloc' Mo'iutaiu deLake m the Adirond.u ks A mobile vihiator mentis that is According In lh lhro K.mamoii of velop'd for oil prosper, ting, ef Tuhnology shaking the terrain at a number of sites the California m an effort to detect an effect that has and others efforts to foul this citi et in been observed m other parts of Ihe California hav so far hee n disappoint world a slowing of pressure have ing although some liehevo it mav have velocities through a region where an preced 'd tlic I't.t quake that took 'l lives and caused an estimate d Ft lai.ion earthquake is about to occur. m damage in San Fernando Tilt in Detect (.hange Maximum Uplift like Tilt meters that, giant carpenters levels, can detect a change in the The occunenee on Vault 15 of two tilt of the landscape equiv alent to lifting earthquakes near Palm Spt mgs has ic'd one end of a milelong hoard a small to hasty resurvc'vmg of ihe a repoi ted swelling fraction of an inch Last week Dr Palmdale' Bulge Barry Raleigh of the United States of the landscape affecting an area fieolngieal Surveys earthquake re- larger than the state of Maine For 2SI1 search group at Menlo Park, Calif miles it almost parallels the San said very large changes m regional Andreas Fault east of Los Angeles The tilt were recorded in August before two two quakes, both of moderate intensity small quakes near Mount Hamilton (magnitude 5 7 and 5 2 on the Riehter The changes, he said, were really scale', oceiii red in the area of the bulge remarkable. that, since I'M, is believed to have inmost undergone the maximum uplift heavily Along the strumented sections of the San Andreas almost 4 5 feet Such swelling of terrain has prefault, devices to record changes tn local magnetism of the earth that may ceded severe quakes tn the past, precede a quake are located roughly notably at Nngata Japan in 11. at every six miles. There is similar San Fernando m 1tTl and at llaieheng. spacing of tiltmeters and creep me- China, m 1475 The Palrnddf area ters which indicate where one side of seems to have swelled eaily in die the fault is slipping relative to the century, then subsided, vet no major other quake occurred Near Hollister, the fault tends to Nevertheless, the Palmdale Bulat creep, releasing strain that ottierw ise includes at least two thirds of the rone where the ground was might accumulate until it causes a devastating earthquake The sectors of ruptured bv the earthquake of IS 7 . the fault nearest San Francisco and Los This was one of the most v loleut quakes lo ked, with no such recorded since F.uropo.ms reached I Angeles appear of strain then release The America North gradual region s, inhabited but now skirts the Almost in Same Direction of Los Angeles suburbs eastern Movement along the fault is always Techniques in the same directum The west side, One difficulty in assessing the bulge dragged by the motion of the Paoitie technique's plate of the earths rigid surface slides is that the northwest relative to the North Ameri- needed to measure its behavior are m can plate their infancy Attempts to repeat the One puzzle is an apparent lack of mts'isui ements have suggested that the heat or stress that might be exacted bulge subsided after 1974, but they have where the sides of the fault slide against also raised doubts about the accuracy each other. It may be, however, that of the surveys Two t'pes of sui uy have been done these effects are masked by overlying rubble and day of the type known as One is leveling." in which standard are used to gouge, which mav be a byproduct of surveying instruments fault movement and serve as a lubricrecord angles aliove and below the ant Hence, the plan to drill more than a horizontal on lines of sight between e into the fault zone survey stations. The surveys are conin wide loops and, if accurate, ducted hit m A October drilling attempt That is, on return the is "dosed and of loop natural gas at a depth 1.2K) feet, the drill ng went up m flames This to the starting point the ups" and downs cancel out and the line meets time, a device to prevent such a Some of the Palmdale loops, itself blowout Is being used do not dose. however, w The extent of stress ithin the deep In the other type of survey, laser mk can be determined by forcing water down the hole until the rock pulses, like radar pulses, record cracks Using that method, it has been changes m distance. The wave lengths found but not explained that stress of laser light being very short, changes of an inch can be increases at greater distances from the of a small fraction whether the land- detected, indicating fault, instead of the reverse Waller Snllini io i Semis Ba. k Pukes Outline in Knrlli B hi mo Ironhoi ot in New Yoi k Times l nter Tito development ot Nl'W YORK new measuring tools and impiove-ineiit- s in ol.ier ones are enabling and st lentists m California to look at r h c d , Otter Enos Aprn 14 CONVERTIBLE SOFA SAVE $100 CARLTON A 30 tepinq omort to any room and proves ar errd bed when opns Super Queen Size ntiHVK! St !Fdt ire a quedn si2e Ortno n 10 A S2 dVcilidOte d- - tononvy mnfje sees ORTHO ELECTRIC ADJUSTABLE BED coNFORTASLV can ORTHO MAT1C bu get BOTH wnpn you buv Tie Omo M k. 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