Bolide Impact on Evaporite Terrane: Sulfur Gas Emission, Aerosol Formation, and Ejecta Dispersal
Bolide Impact on Evaporite Terrane: Sulfur Gas Emission, Aerosol Formation, and Ejecta Dispersal
批准号:
9219121
负责人:
Haraldur Sigurdsson
金额:
$10.56万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1993
资助国家:
美国
项目状态:
已结题
起止时间:
1993-02-15 至 1995-07-31
中文摘要
高硫撞击玻璃球粒的地球化学证据 白垩纪/第三纪(K/T)界线表明, 发生在蒸发岩沉积物上,导致主要排放 到大气层。 PI将研究火流星的后果 对这种气体的影响,导致含硫气体的脱气 硫酸气溶胶的形成和影响 大气层和土地。 硫酸气溶胶, 酸雨可能是导致全球物种灭绝的关键因素, K/T边界。 因此,预防措施的严重性可能在很大程度上是 这是目标岩的特殊地质作用 期间 第一年,PI将通过实验确定 硬石膏和石膏沉积物的脱气和 硫气体排放。 第二年,PI将对 撞击引起的硫酸气溶胶的环境影响。 这些影响可能包括:(a)由于 硬石膏分解产生的CaO沉降物,(B)总体 平流层硫酸盐气溶胶导致的冷却,以及(c)酸雨 硫酸盐气溶胶的沉降物
英文摘要
Geochemical evidence from high-sulfur impact glass spherules at the Cretaceous/Tertiary (K/T) boundary indicates that a bolide impact occurred on evaporite sediment terrane, resulting in major emission to the atmosphere. PIs will study the consequences of bolide impact on such terrane, the resulting degassing of sulfurous gases to the atmosphere, formation of sulfuric acid aerosol, and effects on the atmosphere and land. Sulfuric acid aerosol and possibly acid rain may have been key factors in the global extinction at the K/T boundary. The severity of the extinctions may thus be largely a function of the unusual geology of the target terrane. During the first year PIs will determine experimentally the processes of degassing of anhydrite and gypsum sediments and the speciation of sulfur gases emitted. In the second year PIs will model the environmental effects of an impact-induced sulfuric acid aerosol. These effects may include: (a) alkalinity crisis due to the fallout of CaO derived from dissociation of anhydrite, (b) global cooling due to stratospheric sulfate aerosol, and (c) acid rain from fallout of sulfate aerosol.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
Exploration of the Submarine Deposits and Morphology of Santorini Volcano, Greece
-
批准号:0452478
-
项目类别:Standard Grant
-
资助金额:$22.61万
-
财政年份:2005
-
负责人:Haraldur Sigurdsson
-
依托单位:
Explosive Volcanic Episodes: Integration of the Deep Sea and Terrestrial Record
-
批准号:9909769
-
项目类别:Standard Grant
-
资助金额:$16.79万
-
财政年份:2000
-
负责人:Haraldur Sigurdsson
-
依托单位:
Influence of Magma Properties on the Dynamics of Explosive Eruptions
-
批准号:9104791
-
项目类别:Standard Grant
-
资助金额:$5.25万
-
财政年份:1991
-
负责人:Haraldur Sigurdsson
-
依托单位:
Subaqueous Pyroclastic Flows from Krakatau and Tambora Volcanoes, Indonesia
-
批准号:9102229
-
项目类别:Standard Grant
-
资助金额:$7.78万
-
财政年份:1991
-
负责人:Haraldur Sigurdsson
-
依托单位:
Subaqueous Pyroclastic Deposits from Tambora and Krakatau Volcanoes, Indonesia
-
批准号:8911228
-
项目类别:Continuing Grant
-
资助金额:$9.57万
-
财政年份:1989
-
负责人:Haraldur Sigurdsson
-
依托单位:
Influence of Magma Properties on the Dynamics of Explosive Eruptions
-
批准号:8719894
-
项目类别:Standard Grant
-
资助金额:$11.8万
-
财政年份:1988
-
负责人:Haraldur Sigurdsson
-
依托单位:
Acquisition of a Particle Sensor and Counter
-
批准号:8708519
-
项目类别:Continuing Grant
-
资助金额:$1.38万
-
财政年份:1987
-
负责人:Haraldur Sigurdsson
-
依托单位:
Fallout of Particles from Explosive Eruption Columns and Other Convective Plumes
-
批准号:8607336
-
项目类别:Standard Grant
-
资助金额:$8.0万
-
财政年份:1986
-
负责人:Haraldur Sigurdsson
-
依托单位:
The Petrologic Estimation of Volcanic Aerosols
-
批准号:8503104
-
项目类别:Continuing Grant
-
资助金额:$8.7万
-
财政年份:1985
-
负责人:Haraldur Sigurdsson
-
依托单位:
The Influence of Magma Properties on the Dynamics of Explosive Eruptions
-
批准号:8416782
-
项目类别:Standard Grant
-
资助金额:$14.8万
-
财政年份:1985
-
负责人:Haraldur Sigurdsson
-
依托单位:
Computer Modelling of Eruption Column Dynamics and Tephra Fallout From Explosive Eruptions
-
批准号:8306384
-
项目类别:Continuing Grant
-
资助金额:$12.33万
-
财政年份:1983
-
负责人:Haraldur Sigurdsson
-
依托单位:
Computer Modelling of Tephra Fallout From Explosive Eruptions
-
批准号:8205955
-
项目类别:Standard Grant
-
资助金额:$3.94万
-
财政年份:1982
-
负责人:Haraldur Sigurdsson
-
依托单位:
Studies of the 1980 Mt. St. Helens Tephra Deposits
-
批准号:8020405
-
项目类别:Standard Grant
-
资助金额:$1.0万
-
财政年份:1980
-
负责人:Haraldur Sigurdsson
-
依托单位:
Collaborative Research on Role of Volatiles in Lesser Antilles Island Arc Magmas
-
批准号:8018809
-
项目类别:Standard Grant
-
资助金额:$6.43万
-
财政年份:1980
-
负责人:Haraldur Sigurdsson
-
依托单位:
Petrographic Provinces of the Mid-Atlantic Ridge
-
批准号:7913805
-
项目类别:Continuing Grant
-
资助金额:$16.28万
-
财政年份:1980
-
负责人:Haraldur Sigurdsson
-
依托单位:
Tephrachronology and Submarine Volcanism of the Lesser Antilles Arc
-
批准号:7725789
-
项目类别:Continuing Grant
-
资助金额:$17.79万
-
财政年份:1978
-
负责人:Haraldur Sigurdsson
-
依托单位:
Petrology and Geochemistry of Icelandic Basalts: Spatial AndTemporal Variation From Miocene to Present
-
批准号:7723736
-
项目类别:Standard Grant
-
资助金额:$7.23万
-
财政年份:1978
-
负责人:Haraldur Sigurdsson
-
依托单位:
Mechanism of Explosive Rhyolitic Eruptions: a Model and TwoCase Histories
-
批准号:7622083
-
项目类别:Standard Grant
-
资助金额:$1.56万
-
财政年份:1976
-
负责人:Haraldur Sigurdsson
-
依托单位:
Tephrachronology and Submarine Volcanism in the Lesser Antilles Arc
-
批准号:7521197
-
项目类别:Standard Grant
-
资助金额:$4.3万
-
财政年份:1976
-
负责人:Haraldur Sigurdsson
-
依托单位:
Theoretical Studies of Volcanic Eruption Columns and Atmospheric Transport
-
批准号:7622319
-
项目类别:Standard Grant
-
资助金额:$1.78万
-
财政年份:1976
-
负责人:Haraldur Sigurdsson
-
依托单位:
国内基金
海外基金
登录
查看更多内容
The Heterogenous Impact of Monetary Policy on Firms' Risk and Fundamentals
-
批准号:--
-
项目类别:外国学者研究基金项目
-
资助金额:--
-
批准年份:2024
-
负责人:潘军
-
依托单位:
基于ImPACT方案的家长干预对孤独症谱系障碍儿童干预疗效及神经生物学机制研究
-
批准号:82301732
-
项目类别:青年科学基金项目
-
资助金额:30万元
-
批准年份:2023
-
负责人:乐郊
-
依托单位:
2型糖尿病胰岛β细胞功能调控新靶点IMPACT的功能及作用机制研究
-
批准号:81600598
-
项目类别:青年科学基金项目
-
资助金额:19.0万元
-
批准年份:2016
-
负责人:李锴
-
依托单位:
基于IMPACT模型的社区慢性病干预效果的经济学评价研究
-
批准号:71303173
-
项目类别:青年科学基金项目
-
资助金额:21.0万元
-
批准年份:2013
-
负责人:张艳春
-
依托单位: