摘要:

Early on the morning of June 28, 1992, millions of people in southern California were awakened by the largest earthquake (Ms 7.5, Mw 7.4) in the western U.S. in the past 40 years. The quake initiated near the town of Landers, Calif., at 11:57 (GMT) and ruptured to the north and then the northwest along a 70‐km stretch of the Mojave Shear Zone. Fortunately, the strongest shaking occurred in uninhabited regions of the Mojave desert, but one child was killed in Yucca Valley and 400 people were injured in the surrounding area. The communities of Landers, Yucca Valley, and Joshua Tree in San Bernardino County sustained significant ($100 million) damage to buildings and roads. Damage to water and power lines also caused problems in many of the desert area

ISSN:0002-8606    

DOI:10.1029/91EO00307

年代:1992

数据来源: WILEY

摘要:

Doing science in the former Soviet Union has become riskier and more chaotic than before Gorbachev's fall, but it offers tremendous new opportunities, say scientists participating in the Joint Seismic Program between the United States and the former Soviet republics. In a recent setback, U.S seismologists working at Borovoye Geophysical Observatory in Kazakhstan had their visas confiscated in August and were forced to suspend work. But researchers are also continuing to gain unprecedented access to valuable sites in the former republics and to treasure troves of seismic data once shrouded by Soviet secrecy.

ISSN:0002-8606    

DOI:10.1029/91EO00309

年代:1992

数据来源: WILEY

摘要:

The TOPEX/Poseidon satellite, a joint U.S./France space mission to study the global ocean circulation (seeEos, August 27, 1991, page 369), entered its operational orbit on September 21. In this near‐circular orbit, which has an equatorial altitude of 1336 km, the satellite makes 12.8 revolutions a day and lays its ground track in a pattern that repeats every 10 days. The ground‐track spacing is 315 km at the equa

ISSN:0002-8606    

DOI:10.1029/91EO00310

年代:1992

数据来源: WILEY

摘要:

When the dust had settled after the Fall Meeting abstract deadline on September 10, a new record was set: 4,604 abstracts had been received for the San Francisco meeting. This is a 12% increase over last year, making the 1992 meeting the largest AGU meeting ever held!This follows the success of the AGU Spring Meeting in Montreal, which also broke records for the number of presentations and attendees at the annual spring event. We expect 6,000 people to attend this year's Fall Meeting, to be held December 7–11. There will be 400 scientific sessions as well as 120 exhibitors on han

ISSN:0002-8606    

DOI:10.1029/91EO00312

年代:1992

数据来源: WILEY