‘ “Amarak is the head of the MNLF – Moro National Liberation Front”.’
‘One sometimes despairs of mankind,’ Professor Alec Benson said sadly. ‘Here we are, twenty miles from the ocean, and still they go marching steadily east – if cars moving at an average of a mile per hour can be said to be marching. They’re as safe from a tidal wave here as they would be if they lived in Colorado, but I don’t suppose any of them intend stopping until they pitch camp atop the San Gabriel Mountains.’ He turned away from the window, picked up a cane and pressed a switch to illuminate a nine-by-eight wall chart of the State of California.
‘Well, gentlemen, to our Earthquake Slip Prevention Programme – hereon, ESPP. Where we have selected certain locations for drilling and why. The “where” and the “why” are really one and the same. As I explained last time, the theory, in essence, is that by injecting lubricating fluid along certain fault lines we will ease the frictional resistance between the tectonic plates and so – hopefully – cause them to slide past each other with a minimum of fuss and bother – a series of tiny earthquakes at frequent intervals instead of major earthquakes at long intervals. If the frictional co-efficient is allowed to build up until the lateral stress becomes intolerable then something has to go and one plate jerks forward, perhaps anything up to twenty feet, in relation to the other. That’s when we have a big one. Our sole purpose – perhaps I should say our hope – is to release this frictional coefficient gradually.’ He tapped the chart with the cane. ‘I’ll start from the bottom – the south.
‘This is actually the first borehole we started digging, the first of what we call our trigger spots. It’s in the Imperial Valley, between Imperial and El Centra. We had an earthquake here in nineteen-fifteen, six-point-three on the Richter scale, another in nineteen-forty, a fairly big one of seven-point-six and a small one in nineteen-sixty-six. This is the only known section of the San Andreas Fault near the US-Mexican border.’ He moved his cane.
‘We’ve drilled this one here near Hemet. There was a heavy earthquake here in eighteen-ninety-nine – no seismological recordings of it – in the area of the Cajon Pass, another of six-point-eight in nineteen-eighteen in the same fracture area – this is the San Jacinto Fault.
‘This third drill-hole is the nearest to where we are now – in the San Bernadino area. Latest earthquake there was seventy years ago, and that was only six on the scale. We have a strong feeling here that this may be a sleeper with a slip overdue: but that may be because we are living so close to the damn thing.’
Barrow said: ‘What effects would such earthquakes have if they did occur? Big ones, I mean.’
‘Any one of the three would certainly make the citizens of San Diego unhappy, and the second and third would offer a direct threat to Los Angeles.’ He moved the pointer again. ‘The next borehole lies in a fault which was a sleeper – until nineteen-seventy-one. Six-point-six in the San Fernando Valley. We hope that easing the pressure here might take some of the strain of the Newport-Inglewood Fault which, as you know, lies directly under the city of Los Angeles and had its own earthquake, of six-point-three in nineteen-thirty-three. I say “hope”. We don’t know. We don’t know how the two faults are connected. We don’t even know if they’re connected. There’s an awful lot we don’t know and that’s guesswork, hopefully inspired, probably not. But it’s no guess that a big one there could hurt Los Angeles badly: after all, the community of Sylmar, the worst-hit area in the shock, actually lies inside the Los Angeles city boundaries.’ The point of the cane moved again.
‘Tejon Pass. This one has us worried. Long overdue activity here and the last one – a hundred-and-twenty years ago – was a beauty, the strongest in Southern Californian history. Well, it wasn’t as great as the massive earthquake that hit Owens Valley in eighteen-seventy-three – that was the biggest in recorded Californian history – but we’re a parochial lot hereabouts and don’t regard Owens Valley as being in Southern California. A big slip here would very definitely give the Los Angelinos something to think about: if I knew about it in advance I, personally, would get out of town. Tejon Pass is on the San Andreas Fault, and it’s close by here, at Frazier Park by Fort Tejon, that the San Andreas and Garlock Faults intersect. There’s been no major earthquake in the Garlock that is known of – whether that recent small shake was caused by our friend Morro or not we have no means of telling – and none is expected: but, then, no one expected the nineteen-seventy-one business in San Fernando.’ The cane moved on.
‘Here we have our – let me see – sixth drilling-hole. It’s on the White Wolf Fault. It was the scene–’
He broke off as the phone rang. One of his assistants answered, looked round the seated men. ‘Which one of you is Major Dunne, please?’
Dunne took the phone, listened briefly, thanked the caller and hung up. He said: ‘The Adlerheim has quite a transport fleet. Not one but two helicopters, two unmarked plain vans and a jeep.’ He smiled at Ryder. ‘Two more pointers you can tick off, Sergeant.’ Ryder nodded. If he experienced any satisfaction he didn’t show it – more probably, he had been so convinced in advance of what Dunne had just said that the confirmation hardly called for comment.
Benson said: ‘What’s all this about pointers?’
‘Routine investigative checks, Professor.’
‘Ah. Ah, well, I suppose it’s none of my business. I was saying – yes, the White Wolf. Seven-point-seven, nineteen-fifty-two, the biggest in Southern California since eighteen-fifty-seven. The epicentre was somewhere between Arvin and Tehachapi here.’ He paused and looked at Ryder. ‘You frown, Sergeant? Quite heavily, if I may say so.’
‘Nothing, really, Professor. Passing thoughts. Please carry on.’
‘Well. This is a very tricky area. It’s all conjecture, really. Anything happening in the White Wolf could affect both the Garlock Fault and the San Andreas at Tejon. We don’t know. There could be a link with the Santa Ynez, Mesa and Channel Islands Faults. Very attractive earthquake area, reports going back to the beginning of the nineteenth century, last big one at Lompoc in nineteen-twenty-seven. It’s all so uncertain. Any major disturbance in the Santa Ynez area would certainly cause a major disturbance in Los Angeles.’ He shook his head. ‘Poor old Los Angeles.’ Benson wasn’t smiling. ‘It’s ringed by earthquake centres – apart from having its own private and personal one at Long Beach. Last time I saw you I talked about the monster earthquake. If it were to hit San Jacinto, San Bernadino, San Fernando, the White Wolf, Tejon Pass, Santa Ynez – or, of course, Long Beach itself – the western hemisphere would be one major city less. If our civilization vanishes and another arises then that new one will be talking about Los Angeles as we today talk about the lost city of Atlantis.’
Barrow said: ‘You are in a jovial mood today, Professor.’
‘Alas, events happening around me and people asking me the questions do tend to make me less than my optimistic sunny self. Forgive me. Next, up here in the central San Andreas, we are digging an interesting hole between Cholame and Parkfield. We know we’re smack on the San Andreas there. Very active area, lots of shaking and banging going on most of the time but, again ominously, no great earthquake has ever been recorded in this area. There was a pretty big one some way to the west, back in the ‘eighties, at San Luis Obispo which could have been caused by the San Andreas or the Nacimiento Fault which parallels the coast west of the San Andreas.’ He smiled without any particular mirth. ‘A monster striking in either fault would almost certainly dump the Morro Bay nuclear reactor station into the sea.
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