Refining tephra dispersal in Japan to understand the impact of past volcanic eruptions and synchrony of past climate changes

改进日本火山灰的扩散,以了解过去火山喷发的影响和过去气候变化的同步性

基本信息

  • 批准号:
    2284762
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Studentship
  • 财政年份:
    2019
  • 资助国家:
    英国
  • 起止时间:
    2019 至 无数据
  • 项目状态:
    已结题

项目摘要

Lake Suigetsuis located in a small tectonic basin and forms the largest of the 'Mikata Five Lakes', Honshu, Japan(see: Figure 1). The Suigetsu archive records continuous sediment deposition over the last ~ 150 ka (Nakagawa et al.,2012)and has been intensely studied over two decades. It is widely regarded as one of the key high-resolution and precisely dated palaeoenvironmental archives ineast Asia, including a detailed record of explosive volcanism for Japan, South Korea and China (McLean et al.,2016; Smith et al.,2011). Whilst the chronology for this record is well constrained for the past ~ 60 ka by hundreds of radiocarbon dates(Ramsey et al.,2012)and annual and seasonal laminae (varves)(Marshall et al.,2012; Schlolaut etal.,2018),a robust chronology is lacking for older sections of the core. This has limited the ability to accurately correlate the pre-60 ka sediments of the Suigetsu record with other high-resolution archives within the east Asia/Pacific region and beyond. Thus, improving the chronology for the older section of the core has the potential to revolutionise our understanding of spatial leads and lags in palaeoclimate change in this region. The use of time-parallel stratigraphic (isochronous) markers offers the potential to overcome issues associated with the comparison ofpalaeoenvironmental records on independent timescales. Volcanic ash (tephra)iswidely dispersed during explosive eruptions and deposited near instantaneously. These tephra layerspreserved within sedimentary sequences areroutinely employed as isochronous markers for the synchronisation of disparate records.Methodological developments have facilitated the isolation of non-visible tephra (cryptotephra; < 125 qm) deposits, enabling research to be conducted in increasingly distal locations,allowing sedimentary archives from a greater spatial area to be used. Identifying tephra in distal records has enabled greater understanding in the tempo of volcanism, ash dispersal (Albert et al.,2018), the environmental impacts of explosive volcanic eruptions (Matthews et al.,2012)and the synchronicity of palaeoenvironmental response to climate change over continental and inter-continental distances(Lane et al.,2013).Cryptotephra investigations of the late Pleistocene and Holocene section of the Lake Suigetsu sedimentary archive haveshown that there are up to four times morenon-visiblelayers than can beenseen in core sections(McLean et al.,2018)which has significantly extended our knowledge of tephra dispersal (McLean et al.,2016, 2018). Therefore there is significant potential for tephrochronology in the east Asian/Pacific region due to the number and the distribution spreadof ash fall events across Japan. Evaluating the eruptive histories of volcanoes in this part of the world is essential for accurate hazard assessments. The east Asian/Pacific region is home to over ~ 30% of the global population (Cook et al.,2010; Ha et al.,2012)and the location of a large number of volcanoes -some of which have produced a number of the largest magnitude volcanic eruptions over the last 200 ka (Newhall et al.,2018). Across the islands of Japan, there are over 110 volcanic centres which are known to have been active during the late Quaternary (Machida and Arai, 2003; Figure 1). Thus, it is crucial that the tempo of volcanism is well understood as well as the scale of potential environmental impacts of large explosive volcanic eruptions for the local population.
水月湖位于一个小型构造盆地中,是日本本州“三方五湖”中最大的一个湖(见图1)。水月档案记录了过去约 150 ka 的连续沉积物沉积(Nakakawa 等人,2012),并经过二十年的深入研究。它被广泛认为是东亚关键的高分辨率和精确年代的古环境档案之一,包括日本、韩国和中国爆发火山活动的详细记录(McLean等,2016;Smith等,2011)。虽然该记录的年代学受到数百个放射性碳测年法(Ramsey et al.,2012)和年度和季节性纹层(varves)(Marshall et al.,2012; Schlolaut etal.,2018)的严格限制,但对于核心的较旧部分缺乏可靠的年代学。这限制了将水月记录的 60 ka 前沉积物与东亚/太平洋地区及其他地区的其他高分辨率档案准确关联的能力。因此,改进核心较旧部分的年代学有可能彻底改变我们对该地区古气候变化的空间超前和滞后的理解。时间平行地层(等时)标记的使用有可能克服与独立时间尺度上的古环境记录比较相关的问题。火山灰(火山灰)在爆炸性喷发期间广泛分散并几乎瞬间沉积。这些保存在沉积序列中的火山灰层通常用作同步不同记录的等时标记。方法的发展促进了不可见火山灰(cryptotephra;< 125 qm)沉积物的分离,使得研究能够在越来越远的位置进行,从而允许使用更大空间区域的沉积档案。识别远端记录中的火山灰可以更好地了解火山活动的速度、火山灰的扩散(Albert等,2018)、火山喷发对环境的影响(Matthews等,2012)以及大陆和洲际距离上古环境对气候变化响应的同步性(Lane等,2013)。 水月湖沉积档案的更新世晚期和全新世部分表明,不可见层的数量比岩心部分中所见的层数多四倍(McLean等,2018),这极大地扩展了我们对火山灰扩散的认识(McLean等,2016,2018)。因此,由于日本各地火山灰降落事件的数量和分布范围,东亚/太平洋地区的火山灰年代学研究具有巨大的潜力。评估世界这一地区火山喷发的历史对于准确的灾害评估至关重要。东亚/太平洋地区居住着全球约 30% 的人口(Cook 等人,2010 年;Ha 等人,2012 年),也是大量火山的所在地,其中一些火山在过去 200 年中发生了多次最大规模的火山喷发(Newhall 等人,2018 年)。日本列岛有 110 多个火山中心,已知这些火山中心在第四纪晚期就很活跃(Machida 和 Arai,2003 年;图 1)。因此,充分了解火山活动的速度以及大型火山喷发对当地居民潜在环境影响的规模至关重要。

项目成果

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其他文献

吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
  • DOI:
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    0
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LiDAR Implementations for Autonomous Vehicle Applications
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
生命分子工学・海洋生命工学研究室
生物分子工程/海洋生物技术实验室
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吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
  • DOI:
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    0
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
  • DOI:
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{{ truncateString('', 18)}}的其他基金

An implantable biosensor microsystem for real-time measurement of circulating biomarkers
用于实时测量循环生物标志物的植入式生物传感器微系统
  • 批准号:
    2901954
  • 财政年份:
    2028
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    --
  • 项目类别:
    Studentship
Exploiting the polysaccharide breakdown capacity of the human gut microbiome to develop environmentally sustainable dishwashing solutions
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    2896097
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
A Robot that Swims Through Granular Materials
可以在颗粒材料中游动的机器人
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    2027
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    --
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    Studentship
Likelihood and impact of severe space weather events on the resilience of nuclear power and safeguards monitoring.
严重空间天气事件对核电和保障监督的恢复力的可能性和影响。
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    2908918
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Proton, alpha and gamma irradiation assisted stress corrosion cracking: understanding the fuel-stainless steel interface
质子、α 和 γ 辐照辅助应力腐蚀开裂:了解燃料-不锈钢界面
  • 批准号:
    2908693
  • 财政年份:
    2027
  • 资助金额:
    --
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    Studentship
Field Assisted Sintering of Nuclear Fuel Simulants
核燃料模拟物的现场辅助烧结
  • 批准号:
    2908917
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Assessment of new fatigue capable titanium alloys for aerospace applications
评估用于航空航天应用的新型抗疲劳钛合金
  • 批准号:
    2879438
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Developing a 3D printed skin model using a Dextran - Collagen hydrogel to analyse the cellular and epigenetic effects of interleukin-17 inhibitors in
使用右旋糖酐-胶原蛋白水凝胶开发 3D 打印皮肤模型,以分析白细胞介素 17 抑制剂的细胞和表观遗传效应
  • 批准号:
    2890513
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
CDT year 1 so TBC in Oct 2024
CDT 第 1 年,预计 2024 年 10 月
  • 批准号:
    2879865
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    2027
  • 资助金额:
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    Studentship
Understanding the interplay between the gut microbiome, behavior and urbanisation in wild birds
了解野生鸟类肠道微生物组、行为和城市化之间的相互作用
  • 批准号:
    2876993
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship

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