Collecting Micrometeorites from the South Pole Wate Well

[9909694]泰勒这项奖金为从南极水井（SPWW）收集微陨石提供资金支持，SPWW将于2002年关闭。1995年，从井底收集了数千颗微陨石，并精确地计算了1100-1500 a 50-700微米宇宙球粒（熔化的微陨石）的通量和质量分布。D是确定的。新的收集将使P.I.s能够验证中央高原保留了微陨石的原始表面通量，量化400-1100年时间框架内融化和未融化的微陨石，确定1-50微米星际尘埃颗粒（IDP）的通量，并评估它们是微陨石的一个亚类还是来自不同的宇宙来源。在10-100年的时间尺度上量化微陨石通量或成分分布的变化（如果有的话），并从SPWW中尽可能多地恢复微陨石。除了微陨石，私家侦探还建议从井中收集硅藻、蛋白石植物岩和陆生矿物颗粒。这样的收集将帮助研究人员确定降落在南极高原的陆地粒子的来源。约翰逊航天中心(JSC)/美国国家航空航天局已作出安排，对这些样品进行整理，并使它们随时可供地球和行星科学的研究人员使用。

9909694TaylorThis award provides support for funding to collect micrometeorites from the South Pole Water Well (SPWW) before it is closed in 2002. In 1995, thousands of micrometeorites were collected from the bottom of the well and a precise flux and mass distribution for 50-700 micron cosmic spherules (melted micrometeorites) for 1100-1500 A.D was determined. The new collection will allow the P.I.s to verify that the central plateau preserves the original surface flux of micrometeorites, quantify both melted and unmelted micrometeorites for the 400-1100 A.D. time frame, determine the flux for 1-50 micron interplanetary dust particles (IDP's) and assess whether they are a subclass of micrometeorites or derive from different cosmic sources, quantify variations (if any) in the flux or compositional distribution of micrometeorites on 10-100 year time scales and recover as many micrometeorites from the SPWW as possible. In addition to micrometeorites, the P.I.s propose to collect diatoms, opal phytoliths and terrestrial mineral grains from the well. Such collections will help researchers determine the sources of terrestrial particles landing on the Antarctic plateau. Arrangements have been made for Johnson Space Center (JSC)/NASA to curate the samples and make them readily available to researchers in earth and planetary sciences.