翻訳と辞書 Words near each other ・ Compton, Illinois ・ Compton, Maryland ・ Compton, Plymouth ・ Compton, Quebec ・ Compton, Surrey ・ Compton, Virginia ・ Compton, Waverley ・ Compton, West Sussex ・ Compton, Wolverhampton ・ Compton-Thornhill baronets ・ Compton-Wood House ・ Compton/Woodley Airport ・ Comptonia ・ Comptons Corner, Virginia ・ Comptons of Soho ・ Compton–Belkovich Thorium Anomaly ・ Compton–Getting effect ・ Compton–Miller Medal ・ Compton—Frontenac ・ Compton—Stanstead ・ Comptroller ・ Comptroller and Auditor General ・ Comptroller and Auditor General for Jersey ・ Comptroller and Auditor General of India ・ Comptroller and Auditor General of Ireland ・ Comptroller general (disambiguation) ・ Comptroller General of Brazil ・ Comptroller General of Chile ・ Comptroller General of Convicts (Western Australia) ・ Comptroller General of the Exchequer Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Compton–Belkovich Thorium Anomaly ： ウィキペディア英語版 Compton–Belkovich Thorium Anomaly The Compton–Belkovich Thorium Anomaly is a hotspot (volcanic complex) on the Moon. It is on the far side of the Moon and was found by a gamma-ray spectrometer in 1998.〔 It is an area of concentrated thorium, a radioactive element.〔 Lunar rock samples from the Apollo missions reveal that most lunar volcanism occurred around 3 to 4 billion years ago, but could have been as recent as 1 billion years ago due to the unknown history of the moon's far side.〔 ==Description== The Compton–Belkovich Thorium Anomaly was found in 1998 by the Gamma Ray Spectrometer (GRS) instrument on board the Lunar Prospector (LP) and subsequently identified as a hotspot, located around . The estimated thorium concentration reaches (5.3 micrograms per gram) while the surrounding highland basalts only contain between . Compared to the Earth's thorium concentration of , the Compton–Belkovich's is very high.〔 It has unusually high reflectance, identified by a visible imaging study that was carried out later by the Clementine spacecraft in a Clementine Visible Images study. High resolution images from the Lunar Reconnaissance Orbiter LRO made it possible to analyze the surface features of the Compton–Belkovich Thorium Anomaly in 2011.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Compton–Belkovich Thorium Anomaly」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.