Planetary Science at Bristol

布里斯托尔的行星科学

基本信息

  • 批准号:
    ST/V000888/1
  • 负责人:
  • 金额:
    $ 66.1万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Research Grant
  • 财政年份:
    2021
  • 资助国家:
    英国
  • 起止时间:
    2021 至 无数据
  • 项目状态:
    未结题

项目摘要

We will make a timely return to a legacy of the manned Apollo 12-16 missions to the moon: an extensive seismic dataset. This dataset recorded of over 12500 'moonquakes' has been used extensively to image the deep structure of the moon, but these studies only provide a static picture. Seismic anisotropy enables us to probe subsurface dynamics, but its measurement is challenging for the complex lunar data. Recent advances in analysis techniques developed for noisy terrestrial data now make these measurements possible. Such measurements can be used to probe processes such as convection in the lunar mantle, or even tell whether there are still hot, molten traces of the moon's fiery birth deep in the interior.Unlike the Earth's moon, Saturn's giant moon Titan, has a thick atmosphere with an exotic mix of nitriles and hydrocarbons. Titan provides a natural laboratory to test our understanding of atmospheric chemistry and physics. There are also many similarities with Earth including polar vortices and distinct polar chemical compositions, that can provide insight into our own planet. A wealth of data from the Cassini spacecraft and the James Webb Space Telescope, will be used to study Titan's atmosphere. In particular we will examine the role of atmospheric waves, extreme cold and polar feedbacks, and orbital influences on Titan's seasons. As well as the large moons, we will also study small, asteroid bodies. In particular, we will attempt to explain surface features discovered on high definition images obtained by recent missios. We seek to explain 'lowland' topography. The goal of this research is to understand how changes in shape, spin-period, and overall size of the asteroid influence the formation of lowlands, to assist in the selection of future targets for sample return missions. Vaporisation occurs when planetary objects collide, as an inevitable part of their growth in the gas-dust disk around the proto-Sun. Yet it was previously assumed that the less volatile major building blocks, silicon and magnesium (1/3 Earth's mass) were unaffected. New measurements from our group suggest ~50% of Earth's original mass was vaporised, challenging this paradigm. However, there are no experimental data to substantiate the importance of vapour loss in shaping planetary compositions. We propose innovative experiments and analysis to determine the necessary liquid-vapour chemical interactions and address this knowledge gap, allowing us to better model planetary forming processes.Water is vital to understanding the formation and habitability of terrestrial planets. At the birth of the Solar System small planetary bodies formed through the accretion of dust, mineral grains and sometimes ice. The addition of water and other volatile elements to these small planetary bodies may have taken place in the inner Solar System asteroid belt or near Saturn and Jupiter's orbit. Distinguishing between these scenarios is critical for models of planetary growth. Some meteorites contain small amounts of water trapped in minerals over this long time period. In this project we will analyse the isotopic composition of this water to fingerprint to where in the Solar System it was added. A prime constituent of many asteroids and meteorites are millimetre sized, quenched melt droplets or chondrules. These objects formed in the first few million years of solar system history, although exactly when is a matter of considerable debate. It is a challenging problem as we need to distinguish time periods of less than 1million years in objects more than 4.5 billion years old. Yet it is important problem to be able to reliably map the formation of chondrules on the appropriate time period in a rapidly evolving early solar system. We will apply a novel dating approach we have developed as part of previous STFC funding to hopefully reconcile currently contrasting interpretations.
我们将及时返回载人阿波罗12-16号登月任务的遗产:一个广泛的地震数据集。这个记录了超过12500次“月震”的数据集已被广泛用于对月球的深层结构进行成像,但这些研究只提供了静态图像。地震各向异性使我们能够探测地下动力学,但它的测量是具有挑战性的复杂的月球数据。针对有噪地面数据开发的分析技术的最新进展现在使这些测量成为可能。这种测量可以用来探测月球地幔中的对流等过程,甚至可以判断月球内部深处是否仍然存在月球火热诞生时的炽热熔融痕迹。与地球的月球不同,土星的巨大卫星泰坦有一个厚厚的大气层,其中含有腈和碳氢化合物的奇异混合物。土卫六提供了一个天然的实验室来测试我们对大气化学和物理学的理解。它与地球也有许多相似之处,包括极地涡旋和独特的极地化学成分,这些都可以让我们深入了解我们自己的星球。来自卡西尼号航天器和詹姆斯韦伯太空望远镜的大量数据将用于研究泰坦的大气层。特别是,我们将研究大气波的作用,极端寒冷和极地反馈,以及轨道对泰坦季节的影响。除了大型卫星,我们还将研究小型小行星体。特别是,我们将试图解释最近的missios获得的高清晰度图像上发现的表面特征。我们试图解释“低地”地形。这项研究的目标是了解小行星的形状、旋转周期和整体大小的变化如何影响低地的形成,以帮助选择未来的采样返回任务目标。 蒸发发生在行星物体碰撞时,这是它们在原太阳周围的气体尘埃盘中成长的不可避免的一部分。然而,以前人们认为,挥发性较低的主要组成部分,硅和镁(地球质量的1/3)不受影响。我们小组的新测量表明,地球原始质量的约50%被蒸发,挑战了这一范式。然而,没有实验数据证实蒸汽损失在形成行星组成方面的重要性。我们提出了创新的实验和分析,以确定必要的液体-蒸汽化学相互作用,并解决这一知识差距,使我们能够更好地模拟行星的形成过程。水对于理解类地行星的形成和可居住性至关重要。在太阳系诞生之初,小行星体是由尘埃、矿物颗粒和冰的堆积形成的。水和其他挥发性元素的加入可能发生在太阳系内的小行星带或土星和木星的轨道附近。区分这些情景对于行星增长模型至关重要。一些陨石在很长一段时间内含有少量的水被困在矿物质中。在这个项目中,我们将分析这些水的同位素组成,以确定它在太阳系中的位置。许多小行星和陨石的主要成分是毫米大小的淬火熔融液滴或球粒。这些天体形成于太阳系历史的最初几百万年,尽管确切的时间是一个相当有争议的问题。这是一个具有挑战性的问题,因为我们需要在超过45亿年的物体中区分小于100万年的时间周期。然而,在一个快速演化的早期太阳系中,能够可靠地绘制陨石球粒在适当时间段的形成是一个重要的问题。我们将应用一种新的约会方法,我们已经开发了作为以前的STFC资金的一部分,希望调和目前对比的解释。

项目成果

期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The formation and aqueous alteration of CM2 chondrites and their relationship to CO3 chondrites: A fresh isotopic (O, Cd, Cr, Si, Te, Ti, and Zn) perspective from the Winchcombe CM2 fall
CM2 球粒陨石的形成和水蚀变及其与 CO3 球粒陨石的关系:来自 Winchcombe CM2 陨石坑的新鲜同位素(O、Cd、Cr、Si、Te、Ti 和 Zn)视角
The Winchcombe meteorite, a unique and pristine witness from the outer solar system.
  • DOI:
    10.1126/sciadv.abq3925
  • 发表时间:
    2022-11-18
  • 期刊:
  • 影响因子:
    13.6
  • 作者:
  • 通讯作者:
Planetary accretion and core formation inferred from Ni isotopes in enstatite meteorites
从顽辉石陨石中的镍同位素推断行星吸积和核心形成
Calcium Isotope Evolution During Differentiation of Vesta and Calcium Isotopic Heterogeneities in the Inner Solar System
  • DOI:
    10.1029/2022gl102179
  • 发表时间:
    2023-02
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    Ke Zhu;Hejiu Hui;M. Klaver;Shiying Li;Lu Chen;W. Hsu
  • 通讯作者:
    Ke Zhu;Hejiu Hui;M. Klaver;Shiying Li;Lu Chen;W. Hsu
Radiogenic chromium isotope evidence for the earliest planetary volcanism and crust formation in the solar system
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Timothy Elliott其他文献

Posttraumatic Stress Disorder Symptom Clusters and Substance Use Among Patients With Upper Limb Amputations
  • DOI:
    10.1016/j.apmr.2017.08.299
  • 发表时间:
    2017-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Nathan Kearns;Tiffany Ryan;Mark Powers;Warren Jackson;Timothy Elliott
  • 通讯作者:
    Timothy Elliott
Method optimisation for prolonged laboratory storage of <em>Ascaridia galli</em> eggs
  • DOI:
    10.1016/j.vetpar.2022.109758
  • 发表时间:
    2022-09-01
  • 期刊:
  • 影响因子:
  • 作者:
    Anwar Shifaw;Teka Feyera;Timothy Elliott;Brendan Sharpe;Isabelle Ruhnke;Stephen W. Walkden-Brown
  • 通讯作者:
    Stephen W. Walkden-Brown
<em>Ascaridia galli</em> eggs obtained from fresh excreta, worm uteri or worms cultured in artificial media differ in embryonation capacity and infectivity
  • DOI:
    10.1016/j.vetpar.2022.109792
  • 发表时间:
    2022-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Anwar Shifaw;Isabelle Ruhnke;Timothy Elliott;Brendan Sharpe;Teka Feyera;Stephen W. Walkden-Brown
  • 通讯作者:
    Stephen W. Walkden-Brown
World association for the advancement of veterinary parasitology (WAAVP): Third edition of guideline for evaluating the efficacy of equine anthelmintics
  • DOI:
    10.1016/j.vetpar.2022.109676
  • 发表时间:
    2022-03-01
  • 期刊:
  • 影响因子:
  • 作者:
    Martin K. Nielsen;Georg von Samson-Himmelstjerna;Tetiana A. Kuzmina;Deborah C.K. van Doorn;Aranzazu Meana;Steffen Rehbein;Timothy Elliott;Craig R. Reinemeyer
  • 通讯作者:
    Craig R. Reinemeyer
Antibiotic prophylaxis for full-face laser resurfacing: is it necessary?
全脸激光换肤的抗生素预防:有必要吗?
  • DOI:
  • 发表时间:
    2001
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Zoran Gaspar;Carl Vincuillo;Timothy Elliott
  • 通讯作者:
    Timothy Elliott

Timothy Elliott的其他文献

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{{ truncateString('Timothy Elliott', 18)}}的其他基金

Studies on Planetary Formation and Evolution at Bristol
布里斯托尔的行星形成和演化研究
  • 批准号:
    ST/R000980/1
  • 财政年份:
    2018
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
Research into planetary formation at Bristol
布里斯托尔行星形成研究
  • 批准号:
    ST/M007715/1
  • 财政年份:
    2015
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
The Volatile Legacy of the Early Earth
早期地球的不稳定遗产
  • 批准号:
    NE/M000419/1
  • 财政年份:
    2014
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
Constraints on terrestrial differentiation from the isotopic fractionation of major elements
主要元素同位素分馏对陆地分化的限制
  • 批准号:
    NE/L007428/1
  • 财政年份:
    2014
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
The Response of the Earth to the Terminal Cataclysm
地球对末日灾难的反应
  • 批准号:
    NE/J009024/1
  • 财政年份:
    2013
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
Tracing pollution of the mantle with isotopically anomalous Mo and U
用同位素异常 Mo 和 U 追踪地幔污染
  • 批准号:
    NE/H023933/1
  • 财政年份:
    2011
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
Testing the Hadean Hidden Reservoir Model
测试冥古宙隐伏储层模型
  • 批准号:
    NE/H011927/1
  • 财政年份:
    2010
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
The origin of short-lived nuclides in the early solar system: implications for the assembly of terrestrial bodies
早期太阳系中短命核素的起源:对类地天体组装的影响
  • 批准号:
    ST/F002734/1
  • 财政年份:
    2009
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
Investigating the Precambrian atmosphere, ocean and biosphere with selenium isotopes.
用硒同位素研究前寒武纪大气、海洋和生物圈。
  • 批准号:
    NE/F016832/1
  • 财政年份:
    2009
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant
Constraining core-mantle interaction
限制核幔相互作用
  • 批准号:
    NE/D012805/1
  • 财政年份:
    2007
  • 资助金额:
    $ 66.1万
  • 项目类别:
    Research Grant

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