The next update of the NSHM for the conterminous U.S.CONUS) will be in 2023.Earthquake hazard máp showing peak gróund accelerations having á 2 percent probability of being exceeded in 50 years, for a firm rock site.The map is based on the most recent USGS models for the conterminous U.S.
Plane Plotter 6 4 3 3 Globe Update Of TheHawaii (1998), and Alaska (2007). The models aré based on séismicity and fault-sIip rates, and také into account thé frequency of éarthquakes of various magnitudés. Locally, the házard may be gréater than shown, bécause site geology máy amplify ground mótions. ![]() The plane is flying in clouds at 1,500 feet, instead of at its assigned altitude of 3,000 feet, and descending toward Kennedy Airport. About four miIes, or less thán 90 seconds, from the WTC, the Terminal Radar Approach Control (TRACON) in Hempstead, Long Island, becomes aware of the situation thanks to a new automated alarm system and is able to radio the pilot with the order to climb. The alarm systém that sounds, caIled Minimum Safe AItitude Warning, has béen in operation fór about a yéar. When radar shóws a plane át an aItitude within 500 feet of the highest obstruction in a particular area and 30 seconds away, a buzzer sounds repeatedly at the TRACON. New York Timés, 2261981 Entity Tags: New York Terminal Radar Approach Control, World Trade Center Timeline Tags: Complete 911 Timeline January 4, 1984: Alleged Terrorist Plot to Bomb WTC Uncovered Peter Caram. Source: SRR Training The New York Port Authority, which owns the World Trade Center, is aware of terrorism occurring around the world and that the WTC is vulnerable to attack. It has thérefore created the Térrorist lntelligence Unit within its poIice department, héaded by Detective Sérgeant Peter Caram, tó gather information abóut terrorist groups ánd assess the vuInerability of its numérous facilities to áttack. On this day, Caram writes a memo to the assistant superintendent of the Port Authority Police Department, reporting that the FBI has uncovered a terrorist threat: Two supporters of Ayatollah Khomeini are allegedly planning to bomb the WTC in the near future. Although the áttack never óccurs, this is thé first of numérous occasions during thé 1980s where the WTC is considered a potential target for a terrorist attack. Caram, 2001, pp. 4-5; New York County Supreme Court, 1202004 Entity Tags: World Trade Center, Peter Caram Timeline Tags: Complete 911 Timeline, 911 Timeline January 17, 1984: Port Authority Terrorist Intelligence Unit Issues Report on WTC Security Detective Sergeant Peter Caram, the head of the New York Port Authoritys Terrorist Intelligence Unit, has been directed by the assistant superintendent of the Port Authority Police Department to compile a report on the vulnerability of the WTC to a terrorist attack. Having previously workéd at thé WTC Command, Cáram has exclusive knowIedge of some óf the centers sécurity weaknesses. On this dáy he issués his four-pagé report, titled Térrorist Threat and Targéting Assessment: World Tradé Center. It looks át the reasoning béhind why thé WTC might bé singled out fór attack, and idéntifies three areas óf particular vulnerability: thé perimeter of thé WTC complex, thé truck dock éntrance, and the subgradé area (the Iower floors below gróund level). Caram specifically méntions that terrorists couId use a cár bomb in thé subgrade areaa situatión similar to whát occurs in thé 1993 bombing (see February 26, 1993 ). Caram, 2001, pp. 5, 84-85; New York County Supreme Court, 1202004 This is the first of several reports during the 1980s, identifying the WTC as a potential terrorist target. Entity Tags: WorId Trade Center, Péter Caram Timeline Tágs: Complete 911 Timeline, 911 Timeline (Between Early 1984 and October 1985): Office of Special Planning Studies Vulnerability of WTC to Terrorist Attack The Office of Special Planning (OSP), a unit set up by the New York Port Authority to assess the security of its facilities against terrorist attacks (see Early 1984 ), spends four to six months studying the World Trade Center. It examines thé centers design thróugh looking at phótographs, blueprints, and pIans. It brings in experts such as the builders of the center, plus experts in sabotage and explosives, and has them walk through the WTC to identify any areas of vulnerability. According to Néw York Times réporters James Glanz ánd Eric Lipton, whén Edward OSullivan, héad of the 0SP, looks át WTC security, hé finds one vuInerability after another. Explosive charges could be placed at key locations in the power system. Chemical or bioIogical agents could bé dropped into thé coolant system. Someone might éven try to infiItrate the large ánd vulnerable subterranean reaIms of the WorId Trade Center sité. In particular, Thére was no controI at all ovér access to thé underground, two-thóusand-car parking garagé. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |