Seismology

Seismology (/saɪzˈmɒlədʒi/; from Greek σεισμός "earthquake" and -λογία "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies. The field also includes studies of earthquake environmental effects, such as tsunamis as well as diverse seismic sources such as volcanic, tectonic, oceanic, atmospheric, and artificial processes (such as explosions). A related field that uses geology to infer information regarding past earthquakes is paleoseismology. A recording of earth motion as a function of time is called a seismogram. A seismologist is a scientist who does research in seismology.

History

Scholarly interest in earthquakes can be traced back to antiquity. Early speculations on the natural causes of earthquakes were included in the writings of Thales of Miletus (c. 585 BCE), Anaximenes of Miletus (c. 550 BCE), Aristotle (c. 340 BCE) and Zhang Heng (132 CE).

In 132 CE, Zhang Heng of China's Han dynasty designed the first known seismoscope.

Expedition!

Expedition! is an American travel documentary television series that was broadcast in the United States on ABC Tuesday nights in the 1960-61 television season and Monday nights in the 1961-62 television season.

Summary

Producer John D. Craig hosted episodes that documented journeys to various remote regions of the world, looking for such unusual things as Abominable Snowmen, African bushmen, unfriendly jungle tribes in Brazil, ruined cities of antiquity, and strange animals in their natural habitat. Episodes varied, but all focused on geological, geophysical, biological, anthropological, or archaeological themes.

Production details

The show was sponsored by the Ralston Purina Company, and was broadcast on the ABC television network 7–7:30 PM on Tuesday nights in its first season and on Monday nights in its second season. The first program was broadcast September 20, 1960; the last show was broadcast April 27, 1962. The show received a Thomas Alva Edison award for science education, an Ohio State award for broadcast journalism, and a 1961 Peabody Award for Television Excellence.

Expedition 48

Expedition 48 is scheduled to be the 48th expedition to the International Space Station.

Jeffrey Williams, Aleksey Ovchinin and Oleg Skripochka are to transfer from Expedition 47. Expedition 48 is scheduled to begin upon the departure of Soyuz TMA-19M in June 2016 and conclude upon the departure of Soyuz TMA-20M in September 2016. The crew of Soyuz MS-01 are then to transfer to Expedition 49.

Crew

References

External links

Expedition 6

Expedition 6 was the sixth expedition to the International Space Station (25 November 2002 - 3 May 2003). It was the last three-man crew to reside on the station until the arrival of STS-121. The crew performed two spacewalks in support of maintenance and assembly of the International Space Station.

Crew

Backup Crew

Mission parameters

Mission objectives

The Station's sixth crew was launched to the Station aboard Space Shuttle Endeavour STS-113 in November 2002. The mission was expected to be a four-month mission that was to end in March 2003 when Atlantis STS-114 was to fly to the Station with the Expedition 7 crew. The Columbia disaster, which occurred during the mission on 1 Feb. 2003, and resulted in the indefinite suspension of shuttle flights, changed plans and the crew stayed on the station until May 2003. They returned to earth on Soyuz TMA-1 and a reduced Expedition 7 crew with just two members was delivered to the ISS on Soyuz TMA-2. The Space Shuttle was expected to be grounded for up to two years. Ongoing logistical support for the ISS would have to be carried out by Soyuz and Progress flights until the Space Shuttle returned to flight.