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dc.contributor.author黄金维en_US
dc.contributor.authorHWANG CHEINWAYen_US
dc.date.accessioned2014-12-13T10:48:45Z-
dc.date.available2014-12-13T10:48:45Z-
dc.date.issued2009en_US
dc.identifier.govdocNSC98-2116-M009-001zh_TW
dc.identifier.urihttp://hdl.handle.net/11536/101435-
dc.identifier.urihttps://www.grb.gov.tw/search/planDetail?id=1901115&docId=314919en_US
dc.description.abstract台湾活跃的造山运动长年以来已经吸引了科学界相当多的注意,有两个主要的板块构造理论:厚皮构造理论与薄皮构造理论,来解释造山运动的现象。然而到目前为止,两个理论仍各有其未竟圆满之处。本研究的目的为试图引入重力观测,结合其他相关大地测量方法,以实地观测数据提供上述板块理论一个验证的管道。为此,我们设定一条西起西岸平原,东至海岸山脉,横贯台湾的剖面线作为研究的对象。针对前述两种板块构造理论,我们以模拟计算的方式预估出理论模式所推衍出之地表升降的几何变化,以及源自地表位移,质量转移等现象所引发之重力效应。更进一步,规划中的外业观测数据搜集将可提供模式化的板块构造模型一个边界值条件,用以验证模型的合理性甚或改善模型。依据这种构想,我们沿南部横贯公路为主要作业路线,规画了一个跨越台湾五大地质区的重力监测网。监测网中的绝对重力点一方面提供重力网可靠的控制基准,另一方面在前后长达五年的研究时段中维系时间框架的一致性。于此同时,相对重力子网将从主要路线向外延伸,拓展了监测网良好的空间涵盖程度,并提升了目标剖面额外的资料密度。而为了达成足够的精度以萃取期望中的地球物理讯号,针对诸如固体潮,海潮重力效应,大气效应,地下水文效应等周期性或非周期性的背景干扰因素,我们也将发展改正模式,仔细率定模式参数,希望藉由更完善的模式来支持研究的进行。我们预期上述年度反覆监测所得到的数据将可提供板块构造理论一个坚实的验证机会,并在可见的将来,发掘更多值得探讨的问题。zh_TW
dc.description.abstractThe active ever orogeny in Taiwan has long attracted the attentions from scientists. Two major consequent theorems, recognized as thick skin tectonic and thin skin tectonic, have been developed to justify the underlying orogenic dynamics, yet neither has been proved to be the solid fact so far. It is the objective of this research to introduce gravimetrical observation, along with other geodetic data, serving as model verification. Along a profile crossing Taiwan from west coast plain to east coastal Range, displacements and gravitational variations inferred from the two tectonic models mentioned above can be predicted over a given time domain through computational simulations. The gravimetrical and GPS observations could then validate the theoretical predictions or even more, take the part as extra boundary conditions for tectonic model refinement. In the wake of this mindset, this research proposes a gravimetrical monitoring network to study the dynamic of mountain ranges along the Southern Crossing highway, which would probe all five primary geological regions of Taiwan. The absolute gravimetry in the network provides reliable datum and keep the temporal consistency from a campaign to next campaign throughout the 5 years monitoring; in the mean time, the relative gravimetry, branched out from the main campaign routine, extend the spatial coverage and enhance the data density for the studied profile. To achieve the accuracy sufficient enough to distinguish the targeted geophysical signal, decent models to segregate periodic or non-periodic background factors, such as earth tide, oceanic gravitational effects, atmospheric effect, and hydrological effects, have to be carefully developed, calibrated, and even customized for this specific study. We expect that the data collected from this series of annually repeating campaigns will offer a solid proof for tectonic theorem and very likely will reveal more subjects to be exploited in the future.en_US
dc.description.sponsorship行政院国家科学委员会zh_TW
dc.language.isozh_TWen_US
dc.title以绝对重力研究台湾造山运动---观测与模式比较zh_TW
dc.titleTaiwanese Orogeny from Absolute Gravimetry---Comparison of Observation and Modelen_US
dc.typePlanen_US
dc.contributor.department国立交通大学土木工程学系(所)zh_TW
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