Brassart have always given preference to those of the second category, because there is no need of watching them during a seismic calm, and because they are much more easily constructed.
Electricity Applied to the study of Seismic Movements.
Apparatus for the study of horizontal and vertical seismic movements, etc.
It is capable of being used for domestic purposes in place of any other clock, and of becoming a seismoscopic clock as soon as it is put in electric communication with the seismic telltales.
Both communicate with the extremities of the circuit in which is interposed the seismic telltale that brings about a closing of the current.
Italy, with her volcanic nature, has very naturally made a specialty of movements of the ground, or seismic perturbations.
Seismic clocks may be classed in two categories, according as they are stopped by the effect of a shock or are set running at the very instant one occurs.
Davisson: On the Annual and Semi-annual Seismic Periods; Roy.
In the southern hemisphere the winter month of greatest seismic activity has over 100 per cent more earthquakes than the summer month of least activity.
One stone thrown out weighed two tons, while 1,844 violent explosions were recorded in a single day by the instruments of the seismic observatory.
The entire western part of the United States has been slowly rising for many centuries, and the shifting of soil due to erosion and transportation doubtless contributes to produce these seismic disturbances.
But something more than the mere presence of internal fire is necessary to account for volcanic action, although it may in a large degree account for minor seismic convulsions in the form of an earthquake.
The oceanic basin of the Pacific is throughout a region of volcanic upheaval and seismic disturbance.
As the last greatseismic tremor spent its force in the earth, the whole business portion tumbled into ruins.
With reference to contributions to science, which might be expected from investigations at Martinique, Professor Crook said: "Even new elements might be discovered, and seismic theories either confirmed or disproved.
They argued that seismic disturbances of such intensity come once in fifty or one hundred years.
The possibility of such simultaneous action of the two known seismic factors of the greater peninsula had been foreseen by Prof.
American expert on seismic disturbances, said it was probably the greatest earthquake that has occurred in this country since 1868.
At the same time that this immense aerial undulation started on its tour around the world, another wave but of awful destructiveness, a seismic sea-wave, started on a similar journey.
Much of this section, when raised from the sea, was probably a great elevated plain, cut up and eroded through the ages since the seismic uplift that caused its birth.
These are the result of a seismic upheaval running from north to south, almost at right angles with the main axis of the chains that form the mountainous vertebrae of the island.
Such seismic waves have been especially common upon the Pacific shore of South America and upon the Japanese littoral (Fig.
Wherever earthquakes have been felt, they are certain to occur again; and wherever mountains are growing or changes of level are in progress, there no record of past earthquakes is required in order to forecast the future seismic history.
Upon those coasts which are often in the throes ofseismic disturbance, a quite different effect is to be observed.
Next in importance for seismic instability is the zone which borders both the Mediterranean Sea and the Caribbean—the American Mediterranean—and is extended across central Asia through the Himalayas into Malaysia.
The Evolution and the Outlook of Seismic Geology, Proc.
Under dynamical geology are included important subdivisions, such as seismic geology, or the study of earthquakes, and vulcanology, or the study of volcanoes.
Thus the seismic efforts of 1883 may be seen to have expended their force partly along the great backbone of the S.
Still another seismic belt, starting from the ever active Fogo, and passing through Teneriffe (at that time erupted), would include the regions disturbed in Oct.
Another highly seismic belt extends from the volcanoes of Bourbon, N.
Very little is known regarding earthquake motions, and there are very few seismic elements which are really calculable in conformity to a mathematical theory of probability.
It would seem, however, from such data as are available, that the local conditions are decidedly favorable to a comparative immunity of this region from serious seismic shocks, at least such as would do great and general damage.
With the then recent occurrence at Mount Pelée in mind, and with a full understanding of the liability of the Isthmus to seismic shocks of minor importance, the committee emphatically indorsed the lock-canal project at Panama.
Seismic disturbances have occurred in all parts of the world, and they have occurred at Panama.
All had been thrown to the ground by the first shock, and there they lay, sick from that awful seismic vibration.
Prone on the ground, terrified and bewildered before this awful seismic phenomenon, neither belligerent party thought of fighting.
I was much interested in your note of the 13th, and fancy that the sounds with which you have to deal may be of seismic origin.
He afterwards told Lord Bute that he had brought, without the knowledge of any one in the house, twoseismic instruments, but that they recorded nothing, and that during the night he heard a sound as of a gun being fired outside the house.
Crichton Browne, the only one which had not been already considered, was the use of seismic instruments.
Seismic disturbances were undoubtedly responsible for high pyramidic waves that lifted and fell without onward movement.
I don't suppose there's a part on the earth's surface more liable toseismic disturbances than this region.
It is in this sense that we may speak of the seismic movements of the earth as being caused by suction acting from without.
Apparently, they react in this way to changes in nature which precede the mechanical events by which man registers the seismic occurrence.
It is this combination of kinship and polar opposition which led people of old to regard both lightning in the heights and seismic disturbances in the depths as signs of direct intervention by higher powers in the affairs of men.
For our present purpose we shall look at certain macrotelluric events - events in which large areas of the earth are engaged - taking our examples from meteorology on the one hand and from seismic (volcanic) processes on the other.
In a picture of the seismic activities of the earth which is to comprise phenomena of this kind, the volcanic or tectonic effects cannot be attributed to purely local causes.
All scientific theories concerning the causes of seismic occurrences, both volcanic and tectonic, have been conceived as if the spatial motion of mineral matter were the only happening that had to be accounted for.
It is in maritime regions, accordingly, that the inner strata of the earth succumb most readily to those sudden changes in the gravity-levity tension wherein we have recognized the origin of seismic occurrences.
Crystallization, seen thus in its cosmic aspect, shows a dynamic orientation which is polarically opposite to that of the earth's seismic activities.
Actually there are phenomena of a quite different kind connected with the earth's seismic activities, and these need to be taken into equal account.
The revolutionary movements of Europe at this period were having a seismic effect upon American labor.
But even time cannot obviate the seismic effects of new inventions, and shifts in jurisdictional matters are always imminent.
He clambered to his feet the moment he could stand, and observed: "A most pronounced seismic disturbance--I should say earthquake.
Never before have I been in a position to study seismic disturbances so closely.
I do not think we need apprehend any furtherseismic disturbance.
Although newer hospitals in California are being built according to substantially improved seismic safety standards and practices, older hospital facilities can be expected to be poorly resistant to earthquakes.
When we met in Oakland on July 4 I raised the issue of seismic hazards.
This pilot effort is expected to be usable in other highly seismic areas of California as well as in other States.
As you know, significant theoretical and public policy research had already been completed by our Seismic Safety Commission, State Geologist, Earthquake Prediction Evaluation Council and the Office of Emergency Services.
I was concerned then with the steady increase in seismicactivity in California since 1978.
Since passage of the Field Act in 1933, after the Long Beach earthquake, school buildings in California have been continuously improved to withstandseismic hazards.
Dear Mr. President: Let me take this opportunity to review our conversations over the last few months regarding increased seismic activity in California.
Therefore, the resulting estimates may not be appropriate for other purposes, such as the development of seismic design criteria for a specific site.
No specific plans have been prepared in this detail for other seismic risk areas, although it is expected that the Bay Area plan could be easily adapted to other areas.
Government Code, relating to the Seismic Safety Commission, making an appropriation therefor, and declaring the urgency thereof, to take effect immediately.
And the discipline has stood the shock of seismic disturbance.
And so his peace is undisturbed by the seismic convulsions of Armageddon; he has escaped the crown that Kultur has evolved at Karlsruhe and Essen and Potsdam.
In drawing the map on Plate II it was not intended to represent the epicentric area of every individual earthquake center (which would have crowded the map beyond reasonable limits), but rather to show the principal seismic regions.
Near the left margin of this second map will be found an index of the seismic regions just mentioned, each of them being represented by its ordinal number (large Roman figures).
The noise didn't bother him particularly, though the endless seismic tremors made him dislike the ladders.
By the way, how much bonus should I ask for getting that idea of putting the seismic charges to use after all?
You know yourself we had a nice seismicprogram set up, but when we touched down we found we couldn't carry it out.
Still, it would mean sacrificing that set of seismic records--no, wait.
His astronomical program had been one of those sabotaged by the transfer of tapes to the seismic survey.
The occurrence of seismic sea-waves is probably evidence of the formation of a small, though sensible, fault-scarp in the same region.
Diagram of wave-paths at seismic vertical of Neopolitan earthquake.
When carefully applied, as it has been by Mallet himself, by Johnston-Lavis and Mercalli, we probably obtain at least some conception of the depth of the seismic focus.
In all these districts, Professor Mercalli distinguishes several well-marked seismic centres, to each of which he traces the origin of two or more earthquakes.
One clue to the solution of the problem is afforded by the seismic death-rate of the damaged towns.
Professor Mercalli to represent the distribution of seismic activity in Piedmont and the Riviera.
Professors Taramelli and Mercalli, who two years before had studied the earthquakes in Andalusia, were again nominated, the former to examine the geology of the central regions, and the latter to report on the seismic phenomena.
In many cases the examination of a damaged building or of an overthrown body served more than one purpose, providing materials for ascertaining the depth of the seismic focus as well as the position of the epicentre.
With a dozen such instances the plane of what is called the seismic vertical is established (seismos is the Greek for earthquake).
On the morning of the third day the darkness dispersed, seismic disturbances ceased, and the storms abated.
See Tacitus, Annals, books xii and xiv; and for account of violent seismic disturbances at Rome, see Suetonius in his Life of Galba.
Wednesday morning, was likely to be accompanied with strong atmospheric and seismic disturbances.
Rough blocks of tremendous size had been left here from some seismic disturbance.
The seismic cataclysms which followed the volcanic eruptions caused such wide-spread damage that by the second map period a large portion of the southern part of the continent had been submerged.
Earthquakes completed the disruption, and it seems probable that the sea shown in the second map as dotted with small islands to the south-east of the present Japan, indicates the area of seismic disturbance.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "seismic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
