日全食电脑模拟
<FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-size: 10.5pt"><P class=MsoNormal style="MARGIN: 0cm -43.7pt 12pt -35.9pt; TEXT-INDENT: 44.2pt; LINE-HEIGHT: 12pt; mso-pagination: widow-orphan; mso-line-height-rule: exactly; mso-para-margin-left: -3.42gd; mso-para-margin-top: 0cm; mso-para-margin-right: -4.16gd; mso-para-margin-bottom: 12.0pt"><SPAN><STRONG>2009年7月22日，千年难得一遇的日全食，将在中国的长江流域激情上演，舟山是最佳的观赏区域，日全食将长达5分07秒。而东极岛则以独特的地理位置，成为舟山地区最佳的观测点之一。 今年7月22日的日全食奇观，将使中国成为两千多年来日全食时间最长的东道主国家。舟山因可观测时间最长、太阳高度角最高等无可比拟的优势，已被中国科学院紫金山天文台确认为此次日全食观测最佳地。而此次日全食带绵延几百公里宽，覆盖面甚广，且“越往东，观测效果越好”，，且海面上无任何遮拦物，便是最佳的观测地。届时能在东极观察到日全食的时间为5分07秒（9:37:08～9:42:15），且能达到最佳观测高度57°。 <BR> 选择在东极岛观赏日全食的五大理由： <BR> 1、东极岛特殊的地理位置：据悉，此次日全食带绵延几百公里宽，覆盖面甚广，且“越往东，观测效果越好”。而东极岛则为祖国大陆最东端的人居岛 2、景区空气透明度及大气视宁度良好； 3、东极岛四面环海，海面上无任何遮拦物，最有利观测； 4、从NASA的云量统计图来看，这次日全食整条全食带越靠东、越靠近海的地方云量最低，成功观测的可能性最大； 5、从国外天文专家的反馈信息来看，均倾向于长江三角洲作为此次日全食观测点； <BR></STRONG></SPAN><SPAN> <STRONG>天文知识： </STRONG>日全食</SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: ˎ̥; mso-font-kerning: 0pt; mso-bidi-font-family: Arial; mso-bidi-font-size: 10.5pt">——</SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-bidi-font-size: 10.5pt">地球上最壮观的天象之一，是指月球绕地球转到太阳和地球中间，当太阳、月球、地球三者正好排成一条直线，月球挡住了射到地球上去的太阳光，月球身后的黑影正好落到地球上所产生的天文现象。一般来说，同一地点见到日全食要平均相隔</SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: ˎ̥; mso-font-kerning: 0pt; mso-bidi-font-family: Arial; mso-bidi-font-size: 10.5pt">300</SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-bidi-font-size: 10.5pt">年左右。日全食发生时，在地球上月影里的人们开始看到阳光逐渐减弱，明亮的太阳会完全被月球的黑影遮挡，天空一片漆黑，时间长达</SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: ˎ̥; mso-font-kerning: 0pt; mso-bidi-font-family: Arial; mso-bidi-font-size: 10.5pt">5</SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-bidi-font-size: 10.5pt">分钟，太阳大气在黑色的月球边缘射出白色的光，天空中还可以看到最亮的恒星和行星，既神奇莫测又壮观瑰丽。一次日全食的全过程包括初亏、食既、食甚、生光、复圆五个时期。</SPAN><SPAN> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 12pt; TEXT-INDENT: 8.2pt; LINE-HEIGHT: 12pt; mso-pagination: widow-orphan; mso-line-height-rule: exactly"><SPAN><SPAN style="mso-spacerun: yes"> </SPAN><STRONG>地理位置：</STRONG> <BR> </SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">东极地理位置独特，地处舟山群岛最东端，位于东径</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">122.4</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">度，北纬</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">30.1</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">度之间。东至两兄弟屿接东海（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">12</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">海里外为公海），南至黄大洋接洋鞍渔场，西至岱巨洋，北至嵊山渔场。东极诸岛距沈家门</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">45.5</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">公里，陆域面积为</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">11.7</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">平方公里，拥有大小</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">28</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">个岛屿和</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">108</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">个岩礁。东极即是舟山群岛东端岛屿，同时也是中国海洋最东端的边境岛屿</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> </SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">“</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">东极</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ˎ̥; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">”——</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">名副其实</SPAN></SPAN></FONT></P> 老信息可以去掉类 :)
页:
[1]