A Combination of Asian Language with Foundations of Western Music: An Analysis of Isang Yun's Salomo for Flute Solo or Alto Flute Solo
This dissertation introduces a Korean composer, Isang Yun (1917-1995), who embraced European traditions but retained Asian characteristics in his compositions. Attending the 1958 summer course in Darmstadt in Germany, Yun was strongly influenced by the avant-garde style of Boulez, Stockhausen, Nono, and Cage. In addition to his work as a composer, Yun distinguished himself, as one of the most important Asian composers to blend Eastern and Western music; and although his musical training focused on Western music, he continued the pursuit of Eastern sounds and philosophies throughout his musical life. Imprisoned in 1967 by the South Korean government, Isang Yun's music, particularly in later life, incorporates his beliefs on social and political issues together with musical ideas. Although his love of country was deep, Isang Yun was not allowed to return to South Korea, and he lived in Germany for the remainder of his professional life. In this study, my purpose is to investigate the development of Yun's musical ideas from his acceptance of Taoism four structures in the world: the Tao, heaven, earth, and man. The presence of both Western and Eastern influences in Yun's music provides the basic of his musical style, and analysis of Salomo fur Altoflote oder Flote is included in this dissertation.
Isang Yun's musical bilingualism: serial technique and Korean elements in Fünf Stücke für Klavier (1958) and his later piano works
Isang Yun (1917-1995) was a Korean composer residing in Germany after 1957. Reflecting his musical training in both the East and West, Yun's music integrates serial techniques with elements of Korean traditional music. Yun's piano music merits attention for developing this combination in great depth, as perhaps best exemplified by Funf Stucke fur Klavier (1958). His later piano works, Shao Yang Yin (1966) and Interludium A fur Klavier (1982) emphasize aspects of Korean traditional music more strongly. This study intends to assist pianists to develop an informed interpretation of these works based on an understanding of Yun's musical bilingualism.
Atmospheric drag effects on the KOMPSAT-1 satellite during geomagnetic superstorms
We examine the atmospheric drag on the low earth-orbiting satellite, KOMPSAT-1 in a sun-synchronous orbit at ~685-km altitude starting in 1999, during a 3-month (October-December) period in 2003. This 3-month interval includes the October 29-30 and November 20 magnetic superstorms and weak to moderate storms. We observed that the daily KOMPSAT-1 drag acceleration transiently responses to transient storm-time disturbances. That is, there is an one-to-one correspondence between the KOMPSAT-1 drag accelerations and the storm events. We find that the drag acceleration correlates strongly with the level of geomagnetic disturbance. This indicates that the trajectory of KOMPSAT-1 is significantly perturbed during extremely disturbed intervals because of atmospheric density increase. The main contributor to the density increase is Joule heating associated with the geomagnetic activity rather than the solar EUV radiation, as reported by previous studies. We suggest that understanding how the upper atmosphere responses to the geomagnetic-associated heating is important to predict space weather impacts on low earth-orbiting satellites.