Study on the Tidal Wave System and Formation Mechanism of M2 Tide in the Taiwan Strait

To study the Taiwan Strait （TS）, an unusual sea area, the numerical model in marginal seas of China is used to simulate and analyze the tidal wave motion in the strait. The numerical modeling experiments reproduce the amphidromic system of the M2 tide in the south end of the Taiwan strait, and consequently confirm the existence of the degenerate amphidromic system. On this basis, further discussion is conducted on the M2 system and its formation mechanism. It can be concluded that the tidal waves of the TS is consisted of the progressing wave from the north entrance and the degenerate amphidromic system from the south entrance, in which the progressing wave from the north entrance dominates the tidal wave motion in the strait. Except for the convergent effect caused by the landform and boundary, the degenerate amphidromic system produced in the south of the strait is another important factor for the following phenomena： the large tidal range in the middle of the strait, the concentrative zone of co-amplitude and co-phase line in the south of the strait. The degenerate amphidromic system is mainly produced by the incident Pacific Ocean tidal wave from the Luzon strait and the action by the shoreline and landform. The position of the amphidromic point is compelled to move toward southwest until degenerating by the powerful progressing wave from the north entrance.     

台湾海峡潮汐潮流的有限元模拟

本文采用三维有限元(QUODDY)模型模拟了台湾海峡的潮汐和潮流特征。模拟结果表明,有限元模型可以得到较好的模拟结果:M2,S2,O1,K1的潮位调和常数的平均绝对偏差分别为(4.18cm,7.0°),(4.68cm,11.4°),(3.52cm,7.1°)和(3.86cm,4.5°);东、北分量潮流的平均偏差M2为(10.1cm/s,29.8°)和(12.2cm/s,30.2°),而K1为(5.3cm/s,47.7°)和(5.7cm/s,49.8°)。海峡内半日潮波系统中占主导地位的是自海峡北边界传入的半日潮波。潮汐类型为正规半日潮和不正规半日潮的海区约占整个计算区域的92%以上。海峡内由四个主要分潮引起的理论最大潮差平均值为320cm,其中最大理论潮差可达681cm,出现在海峡西北部的海坛岛至兴化湾一带。     

司徒姓氏的历史追踪

出自姬姓是舜帝的后代起源于先秦得姓始祖虞舜司徒复姓人口总数在中国的大陆和台湾省均未列入百家姓前一百位,不过,在宋版《百家姓》中排序为第四百三十九位,在复姓中排序为第三十一位。司徒一姓,是以官职命名的复姓,据《帝王世纪》     

Characteristics and Performance of the CCD Photometric System at Lulin Observatory

The Lulin One-meter Telescope at Lulin Observatory in Taiwan started open-use observations in January 2003. In order to evaluate the performance of the CCD photometric system, the characteristics and quality of the site, we obtained data of photometric standards as well as calibration data from February to November 2004. We report here the results of our analysis including the gain, readout noise, dark current and linearity of the CCD camera, and transformation coefficients, total throughputs, night sky brightnesses and limiting magnitudes for UBVRI bands.     

Sources and flows of embodied CO2 emissions in import and export trade of China

This paper uses the Global Trade Analysis Project(version 7)database to calculate embodied CO2emissions in bilateral trade between China and other countries(regions)based on input-output methods.The sources and flows of embodied CO2emissions in import and export trade of China are analyzed.Results show that the flows of embodied CO2emissions in export trade are highly concentrated.The main flows to the United States(US)and Japan account for 1/4 and 1/7 of the total CO2emissions in export trade,respectively.Concentrated flows of total exports and small differences in export structure are the main reasons for the highly concentrated export trade.The sources of embodied CO2emissions in import trade have relatively low concentration.Taiwan Province of China,Hong Kong Special Administrative Region of China,US,Russia,Republic of Korea,and Japan account for around 7.72%–12.67%of the total embodied CO2emissions in import trade.The relative dispersion of import sources,the impact of the import structure,and the level of production technology in importing countries caused low concentration of CO2emissions in import trade.Overall,the embodied CO2emissions in the export trade of China are higher than those in import trade.As a result,production-based CO2emissions are higher than consumption-based CO2emissions.The difference of 8.96×108t of CO2,which comes mainly from the US,Japan,Germany,and the United Kingdom,accounts for 58.70%of the total difference.Some suggestions,such as improving energy efficiency,alerting high carbon-intensive industries transfer,expanding the market for sharing risks,and prompting the accounting system of consumption-based CO2emissions,are proposed based on the results.     

台湾地区土地估价与地价管理

台湾土地估价沿袭民国时期中国土地估价的历史,并借鉴日本的土地估价经验,经过半个多世纪的发展完善,目前.对各类土地估价方法及其在各种不同情况下的应用都研究得比较深入.中国大陆土地估价只有十几年的历史,面对人世和土地市场的国际化,如何科学地进行土地估价和地价管理是亟待解决的问题.为此,作者等在在2001年末对台湾在土地估价和地价管理方面的理念和实践进行了考察,现介绍如下.     

Geomorphological effects of plate movemen during Quaternary in China＇s tropics

The eastern and western fronts of plate movement in Taiwan Island and Tibetan Plateau respectively are the two major sources of tectonic force for the morphogensis during Quaternary in China’s tropics. Seven examples of geomorphological effects of plate movement are enumerated to discuss the differentiation of tectonic landforms in space and time during Quaternary. The tectonic movement tends to be more active since middle Pleistocene. Some phenomena such as the arc-shape mountain systems, volcanism and crustal deformation imply that the juncture zone of eastern and western tectonic forces is located at about 110°E.     

闽台创意人才开发合作研究

加强闽台创意人才开发合作,既是创意经济背景下区域经济转型与发展的内在要求,也是提升两地创意产业竞争力的必要手段.基于SOWT方法,在分析闽台两地“五缘”文化和产业互补优势以及自身发展瓶颈的基础上,以海峡西岸经济区的建设以及台湾产业升级为历史契机,对闽台创意人才开发合作的可行性和必要性进行了研究.在此基础上,提出了以政府为主导、产业为载体、高校和科研机构为支撑的政产学研四位一体策略,从建立官方协调机制、优化人才生态环境、加强产业对接合作、创新人才引进政策、闽台高校互补合作等方面进行两地创意人才的开发合作.     

走进台湾

今年夏天,因为烁烁星空,我们相聚在美丽富饶的宝岛台湾。 小时候,就听过很多关于台湾的故事,比如阿里山神木、郑成功收复台湾。通过读书,我知道台湾有驰名天下的美食,有世界上最香甜的水果,有2300万最勤劳善良的人民,有别具一格的风景。     

台湾小记

2008年7月19日至25日,北京师生一行26人,来到祖国的宝岛台湾参加“2008京台天文夏令营”活动。作为两岸青少年科技交流的一部分,京台天文夏令营始于2006年,是由台湾向阳公益基金会、北京市科学技术协会、台北市立天文科学教育馆和北京天文馆联合举办。每年一次,在北京和台湾轮流举办,今年已经是第三次了。