China seismological bureau officials denied published 21 cities active fault belt
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"Active fault" is a professional term, expert says, seismic and activities in space structural belt in general relatively well, therefore, are also called seismic tectonic belt. The seismic tectonic belt or belt is often seen with, including for earthquakes are active faults have many. Actually these active fault in earthquake seismic tectonic belt is ripping with shock the chief culprit of destroying the surface buildings. If can avoid the activities within the seismic tectonic belt may encounter faults, can effectively reduce the earthquake disaster mitigation, achieve results.
Recently, have media published the "China seismological bureau Beijing 21 cities such as Shanghai with" reports of active fault, several websites, and issued a "21 cities map" of active fault, trigger social hot debate.
Report cites China seismological bureau deputy director of institute of geological XuXiWei researchers find out saying that our country 21 cities and announced the main fault activity and the distribution, the latest seismogenic risk, side by side in addition to Shanghai, tianjin, guangzhou, shenyang, yinchuan city such as the fault of the activity of 80...
These reports are accurate? The real condition? Reporter interviewed XuXiWei researchers and China seismological bureau director of research institute of geology tectonic activity RanYongKang researcher.
Reports have basis?
??? response ??� TV spot q&a cause distortions, related results are sorting is perfect
XuXiWei researchers are national science engineering "urban active fault detecting and earthquake risk assessment" project chief expert. Recently, he guest phoenix TV "century when he zuoxiu columns, mentioned" 21 cities active fault detection and earthquake risk assessment "scientific research projects related content, and that has made a" 21 cities map "of active fault.
When host questions "can publish?" XuXiWei answer "may announce".
But in some media reports later, "may announce" have become "China seismological bureau Beijing 21 cities such as Shanghai active faults. With" To this, XuXiWei told reporters: "at that time show person is more, I spot the answer may be heard wrong. I believe some website reports related jumping-off place is ok, I understand. We researchers also hope to scientific research." as soon as possible social services
XuXiWei hope that through the People's Daily reported on the content before correction and clarification. He said, "21 cities active fault detection and earthquake risk assessment" this research project has passed the acceptance, but despite defending due to active fault, eventful belongs to earthquake, relevant datum and text report also in sorting, to modify and improve process, has not been published. Some web site figure captions not 21 cities in China, but the distribution of active fault early Chinese geographical supporting maps with the China earthquake volcanic ", or is China seismic profiles.
As soon as possible XuXiWei said, will try to finish these maps and words of modification and improvement, seeing you earlier, serving society, serves to the land planning for ground building avoid using, provides the basis. According to plan, before the end of this calendar year in research submitted to the press.
He said that at present, in China seismological bureau geological institute web site, complement, update, "China earthquakes and volcanic distribution", according to recent research progress of active fault and earthquakes, further improved China seismic tectonic zones scheme.
Whether it's a seismic fault line of active fault?
??? response ??� both basic same, have indeed detection and identification and its adjacent area 21 cities main fault 109
In science, means "active fault dating 100,000-12 years since the fault activities," is often times the earthquake rupture cumulative, stacked with shock result, is caused by the surface rupture and ripping the root of earthquake disasters. And seismic fault line, also called seismic fracture belt, commonly refers to the activities of visible, ground fault belt of the latest generates earthquakes the distribution of the surface rupture floorboard.
"Earthquake the fault and active fault belt, two nouns mean can be treated as equally, roughly a few minor differences. To understand these small difference need professional knowledge, the general public basic can be treated as equally." RanYongKang said. XuXiWei also says, on many occasions, and these two words use phenomenon.
XuXiWei and RanYongKang tells a reporter, the tenth five-year plan and "11th five-year plan" period, the scientific research personnel indeed to 21 cities and its adjacent area 109 main fault a probe and identification. Only 26 lanes for activities of the fault, not active fault 83. Related results with the city already had the government departments communication.
According to cas members deng up east editor, 2007 issue of China activity structure maps of the quaternary active faults indicate or speculation since more than 400 active faults. But not all of these faults is a seismic fault line. The specific location of these faults, and the activity and the seismic hazard, the state is implementation "of the Himalayan plan" China earthquake activity fault exploring project will gradually to answer these questions.
Active fault and earthquakes have what relation?
??? response ??� research activities fault can effectively defense earthquake, avoid buildings damaged
"Research activities fault is important because it can effectively defense earthquake", RanYongKang said: "identified as active fault, it should be said in the long term will be the earthquake. The next time the probability of earthquake needs further work, is to be sure."
"This is like to human body for CT somewhere that found a lesions, but is difficult to predict when cancerous, said," XuXiWei active faults are like a "lesions". Earthquakes, especially 6.5 + devastating earthquakes are small probability events in urban active fault, the probability of earthquake is not high, but it is the root of surface earthquake disasters.
Once encounter, straight down across these activities of earthquake ground fault extremities, building will not imagine the consequences. The United States, Japan and other technology developed countries to avoid these through the formal legislation to defending the bud.
"Of course, it does not mean to avoid these fault belt, it won't happen earthquake." The benefits of XuXiWei points out, avoid is in the event of an earthquake, the ground with earthquake rupture building won't be active fault with earthquake devastated the ripping.
"It is easy to understand, if your building in active fault on, even building quality is very good, but the strata is broken, building inevitable destruction." XuXiWei said: "this is what we say, can be broken, but it's difficult to fight seismic active fault. If building on, and in good quality, seismic standards high, even though earthquakes, also won't appear too big of a problem." |
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By :
Jessie Stone
Submitted
2011-03-29 20:45:13 |
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