摘要:

October 24, 1992, marked the fourteenth anniversary of the launch of Nimbus 7, one of the most remarkable Earth remote‐sensing spacecraft ever flown. Since 1978, Nimbus 7 has provided fundamental and often unique scientific measurements of Earth that have set the stage for the U.S. Global Change Research Program (Figure 1). These include the first satellite views of the Antarctic ozone hole, the first global view of oceanic primary productivity, and early measurements of the Earth's radiation budget and stratospheric chemical species and aerosols. At the time of writing, four of the original eight instruments on Nimbus 7 are still operational although some anomalous behavior has recently appeared. In total, Nimbus satellites 1–7 carried out some forty‐eight experimental observations of the Earth's global environment from 1964 to the present and established the heritage for current and planned Earth remote‐sensing instruments and m

ISSN:0002-8606    

DOI:10.1029/93EO00286

年代:1993

数据来源: WILEY

摘要:

Leon Lassendied recently at age 91. He had been a member of AGU (Hydrology) since 1938.

ISSN:0002-8606    

DOI:10.1029/EO074i026p00282-02

年代:1993

数据来源: WILEY

摘要:

The James B. Macelwane Medal for significant contributions to the geophysical sciences by a young scientist of outstanding ability was presented to Eric Kunze at the 1992 AGU Fall Meeting Honors Ceremony on December 9, 1992. The meeting was held in San Francisco. The award citation, delivered by Ray Schmitt, as well as Kunze's response, are presented here.“I am grateful to the American Geophysical Union for this opportunity to acknowledge the hard work and substantial scientific contributions of Eric Kunze. I know that formal public acclaim is not his favorite pastime, as he is an instinctively modest person, and I particularly relish this occasion to give him a well‐deserved ho

ISSN:0002-8606    

DOI:10.1029/93EO00445

年代:1993

数据来源: WILEY

摘要:

The International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) views the Decade Volcanos Project as an integral part of its efforts, outlined in full byBarberi et al.“1990”, during the International Decade for Natural Disaster Reduction (IDNDR). The project is only one of several proposed IAVCEI activities for the IDNDR. The IAVCEI Executive Committee wishes to express its sadness and regret that the lives of colleagues were lost during the Galeras eruption in pursuit of the goals of the Decade Volcanos Project.Significant advances have been made in recent years in monitoring restless volcanos and in predicting, in a general sense, new periods of eruption. The behavior of magma beneath volcanos can be monitored by a wide range of techniques, and there have been some notable successes in predicting the timing of explosive outbursts, for example, at Pinatubo volcano in the Philippines in June 1991. However, the recent tragedies at Unzen (Japan, 1991), Galeras (Columbia, 1993), and most recently, Mayon (Philippines, 1993), bring into sharp focus the hazardous and unpredictable nature of active volcanos. These events illustrate that scientists still have much to learn before they develop a clear understanding of how volcanos work and how volcanic eruptions can be predicted accurately—particularly single, sharp, explosive events such as that on Galeras Janua

ISSN:0002-8606    

DOI:10.1029/93EO00390

年代:1993

数据来源: WILEY