|
|---|
|
|
|
|
|
|
a*o
发帖数: 25262 | 1 以前有人说是曼哈顿楼有多高，地桩就有多深。岛上岩床浅，很多高楼大厦的地桩直接
打进岩床，所以一般的地震不会倒。 | l********l
发帖数: 9452 | 2 可能吧，刚才楼里的emergency contact说俺们这楼12级地震都是小case。。。。。。 | a*o
发帖数: 25262 | 3 他说的也对，因为从来没有发生过 12 级。。。就算日本的也没到 10。。
【在 l********l 的大作中提到】
: 可能吧，刚才楼里的emergency contact说俺们这楼12级地震都是小case。。。。。。
| Y*****2
发帖数: 38613 | 4 queens呢？？？？
【在 a*o 的大作中提到】
: 以前有人说是曼哈顿楼有多高，地桩就有多深。岛上岩床浅，很多高楼大厦的地桩直接
: 打进岩床，所以一般的地震不会倒。
| c******A
发帖数: 2421 | 5 在震中附近Richmond发来问候，building evacuate, 提早回家，很欢乐。 | a*o
发帖数: 25262 | 6 以前就听说过纽约的地震迟到了。纽约平均每一百年一大震，上一次 5 级震是 1884
年。震中在 Rockaways. 几个月前的报道又露面了：
3/17/11 By Rolando Pujol
New York seen as overdue for significant earthquake
_gen/derivatives/display_576/image.jpg
It’s seen as something of a New York City bragging right: We don’t have to
worry about earthquakes.
While we shouldn’t be shaking in our boots, we also must avoid sticking our
heads in the sand when it comes to seismic risks, experts advise. In the
aftermath of the Japan earthquake, scientists caution that New York has the
potential for significant temblors. And we are overdue for one of at least 5
.0 in strength, which could cause structural damage and even deaths.
“This idea that New York is impervious to large magnitude earthquakes is
just totally wrong,” said Charles Merguerian, chairman and professor of
Geology at Hofstra University and principal of Duke Geological Laboratory in
Westbury.
More of a long shot would be a 7 Richter scale temblor, like the one in 1886
that walloped Charleston, S.C., which is geologically similar to Gotham.
Another concern is a fault line with a billion-year history of activity --
the Ramapo – that lies within striking range of Indian Point Nuclear Power
Plant, 35 miles north of the city.
“It’s important to say that we’re in more danger of a hurricane than a
damaging earthquake,” said Merguerian, while stressing the danger of
blowing off the risk. “We don’t want to be fear-mongers, but people should
at least be aware of this potential and what to do in the event of an
earthquake — public education is lacking in this area.”
Consider these numbers from a landmark 2008 study by Lamont-Doherty
scientists: While that nightmare 7-plus quake happens on average every 3,400
years, a 5.0 event shakes Gotham roughly every 100 years.
Just such a quake last jolted Gotham on Aug. 10, 1884 off the Rockaways, an
estimated 5.2 temblor that toppled chimneys, opened a 12-foot-long gash of
earth in Brooklyn and was felt as far away as Philadelphia and Hartford.
Such a quake could do more damage today in a considerably more populous and
developed New York. Damage ultimately “depends of the frailty of the
infrastructure,” Merguerian said.
It’s important to recall that while bedrock underlies much of the New York
region, in many places just beneath the surface lies unconsolidated sediment
that would not respond well to a major temblor, Merguerian said.
What’s more, fault lines can be found in several locations in Manhattan.
For instance, the 125th Street fault nips Central Park at the northeast and
continues through the Upper East Side into the East River. (The most recent
activity has been on faults like that one, which trend from northwest to
southeast. Two small 2001 city quakes were along such faults.)
East Coast quakes, too, happen closer to the surface, on stiffer, cooler
rock, magnifying their potential effects when compared to a similar
California quake, experts have said.
Now, consider, that more than half of New York City’s housing stock is made
of unreinforced masonry. Unlike California, the city had long not taken
earthquakes seriously, experts say, and while the city has adopted stiffer
“international” building codes for new buildings, retrofitting, which
would be incalculably expensive, has not been mandated.
Infrastructure from bridges and approaches to train tunnel are areas that
would warrant additional stiffing, and projects are reportedly under way to
do just that.
Officials from the Department of Transportation, and Department of Buildings
did not return requests for comment.
An MTA spokesman said seismic retrofitting is "not an issue" because New
York is not prone to major earthquakes.
Still, Merguerian said, if you examine the pattern, we’re due for another
major event. Before the 1884 quake, the previous big events had been in 1783
and 1737. But to do a better analysis, you’d need “1,500 years of data,”
which we simply don’t have.
“It’s a huge guess - the question is do we feel lucky today? How about
tomorrow?”
Some New Yorkers aren’t quite sure. “What concerns me is that we have many
big buildings. The impact could be huge," said Dolores Myers, 50, of
Bedford-Stuyvesant.
(With Dina Davis)
***
One way to measure the force unleashed by an earthquake is to compare it to
the energy released by an atomic blast. Here are five scenarios as measured
on the Richter scale.
5.0: The equivalent of the 1946 Bikini Atoll atomic blast.
6.0: 27 nuclear weapons
7.0: 729 nuclear weapons
8.0: 19,683 nuclear weaaons
9.0: 531,441 nuclear weapons
http://www.amny.com/urbanite-1.812039/new-york-seen-as-overdue- | a*o
发帖数: 25262 | 7 民房是一般不防大震的。。所以。。哎。。
【在 Y*****2 的大作中提到】
: queens呢？？？？
| a*o
发帖数: 25262 | 8 be safe....and alert of 余震。。
欢乐最好。。LOL。。
【在 c******A 的大作中提到】
: 在震中附近Richmond发来问候，building evacuate, 提早回家，很欢乐。
| Y*****2
发帖数: 38613 | 9 还是house好。。。。住楼房太危险。
【在 a*o 的大作中提到】
: 民房是一般不防大震的。。所以。。哎。。
| b***u
发帖数: 12010 | 10 旧wtc发来贺电。
【在 a*o 的大作中提到】
: 以前有人说是曼哈顿楼有多高，地桩就有多深。岛上岩床浅，很多高楼大厦的地桩直接
: 打进岩床，所以一般的地震不会倒。
| e*********n
发帖数: 4599 | 11 平安就好，最近搬去了？
【在 c******A 的大作中提到】
: 在震中附近Richmond发来问候，building evacuate, 提早回家，很欢乐。
| Y*****2
发帖数: 38613 | 12 你还好吧？
【在 e*********n 的大作中提到】
: 平安就好，最近搬去了？
| e*********n
发帖数: 4599 | 13 没有问题， 谢谢关心，
【在 Y*****2 的大作中提到】
: 你还好吧？
| c******A
发帖数: 2421 | 14 是啊，刚搬来就地震。。。
不过常回NY，所以还是会来这里看看~
【在 e*********n 的大作中提到】
: 平安就好，最近搬去了？
|
|
|
|
|
|
|
|
