检索结果-南通市图书馆

Dust storms in northern China during the last 500 years

Science China Earth Sciences 2021年第5期64卷 813-824页

作者： Shuang ZHANG Hai XU Jianghu LAN Yonaton GOLDSMITH Adi TORFSTEIN Guilin ZHANG Jin ZHANG Yunping SONG Kang’en ZHOU Liangcheng TAN Sheng XU Xiaomei XU yehouda enzel Institute of Surface-Earth System Science School of Earth System ScienceTianjin UniversityTianjin 300072China State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China Institute of Earth Sciences the Hebrew University of JerusalemJerusalem 91904Israel Department of Earth System Science University of CaliforniaIrvineCA 92697USA

The history and mechanisms of dust storms in northern China remain unclear owing to the paucity of reliable longterm,high-resolution geological *** this study,we reconstructed the dust storm history of the last~500 years in northern China,based on sedimentary coarse fraction(>63μm)of a well-dated core from Lake Daihai,Inner *** highresolution data reveal three intervals of frequent dust storms:AD 1520–1580,AD 1610–1720,and AD 1870–*** dust storm events in the Lake Daihai area were broadly synchronous with those inferred from other historical or geological records and generally occurred during cold *** in the intensity of Siberian High and the westerlies modulated by temperature variations are the likely major factors controlling dust storm *** interesting feature is that although the intensities of dust storms have been systematically increased during the recent warming period,a clear decreasing trend within this period is *** recent increase in average dust storm intensity may be ascribed to an increase in particle supply resulting from a rapid increase in human activity,whereas the weakening trend was likely caused by decreases in average wind speed resulting from the recent global warming.

关键词： Dust storm Lake Daihai Temperature Wind speed Human activity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

中国北方近500年沙尘暴活动及机制

引用

中国科学：地球科学 2021年第5期51卷 783-794页

作者：张爽徐海蓝江湖 Yonaton GOLDSMITH Adi TORFSTEIN 张贵林张金宋云平周慷恩谭亮成徐胜 Xiaomei XU yehouda enzel 天津大学表层地球系统科学研究院天津大学地球系统科学学院天津300072 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室西安710061 Institute of Earth Sciences the Hebrew University of JerusalemJerusalem 91904Isracl Department of Earth System Science University of CaliforniaIrvineCA 92697-3100.USA

由于缺乏可靠的、长时间、高分辨率沙尘暴地质记录,中国北方沙尘暴的历史及机制迄今尚未完全澄清.本研究基于内蒙古岱海准确定年的沉积物粗粒度组分(>63μm)重建了中国北方过去~500年沙尘暴活动历史.高分辨率数据显示岱海地区沙尘暴频... 详细信息

由于缺乏可靠的、长时间、高分辨率沙尘暴地质记录,中国北方沙尘暴的历史及机制迄今尚未完全澄清.本研究基于内蒙古岱海准确定年的沉积物粗粒度组分(>63μm)重建了中国北方过去~500年沙尘暴活动历史.高分辨率数据显示岱海地区沙尘暴频发期主要集中在AD1520~1580、AD1610~1720、AD1870~2000三个阶段.该区的沙尘暴活动与其他典型的历史资料及地质档案所记录的中国北方沙尘暴事件基本同步,且尘暴事件频发期大致对应于寒冷时段.我们认为受温度变化调控的西伯利亚冷高压强度变化以及西风强度变化可能是沙尘暴活动的主控因素.一个重要的特征是,尽管沙尘暴活动在近代全球变暖时期呈系统性增强,但在该时段内却呈现出明显的减弱趋势.近现代沙尘暴活动的增强可能与因人类活动增强而导致的粉尘供应量增加有关,而该时段内沙尘暴减弱趋势可能与近现代全球变暖导致的平均风速降低有关.

关键词：沙尘暴岱海温度风速人类活动

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Late Quaternary paleoenvironments of ancient Lake Mojave-reconstructing the history from stratigraphy,sedimentology,soils,geomorphology and radiocarbon dating plus some modeling on the paleohydrology

引用

地球环境学报 2011年第1期 326-326页

作者： Wells S G enzel Y Brown W J Anerson R Y McFadden L D Desert Research Institute Institute of Earth Sciences Hebrew University of Jerusalem Dames and Moore Inc. Department of Earth and Planetary Sciences University of New Mexico

Late Quaternary fluctuations of pluvial Lake Mojave are recorded in subsurface,cored lake deposits and shoreline features in the terminal depositional basins(Silver Lake and Soda Lake) of the Mojave *** Mojave was one of two large late Quaternary lakes sustained by the Mojave River with the other being the upstream Lake *** Lake Depositional Basin(SiLDB) contains a high resolution stratigraphic sequence due to its shallowness and minimal relief across the pre-lake basin *** building in SiLDB began at22 ka with two major high and persistent lake stands occurring between18.4 ka and16.6 ka(LMI) and13.7 ka and11.4 ka(LMII).Overflow from Lake Manix sustained LMI which stabilized at the A-shoreline(elevation 287288 m).LMII coincided with breaching and draining of Lake Manix,reducing the storage capacity of Lake Mojave,increasing its evaporative surface area,and enhancing overflow from Lake Mojave into Death *** overflow downcut the Lake Mojave outlet spillway between 12 ka and 11 ka,ultimately stabilizing at an elevation of 285.5 m(B-shoreline).The majority of shoreline features currently found around the margins of Silver Lake and Soda Lake date to LMII/B-shoreline,as the shallow lake conditions resulted in erosion of older LMI *** also experienced alternating periods of intermittent lake conditions and periods of desiccation some during higher stands and more continuous Lake Mojave phases with a significant drying event occurring15.5 *** drying of Lake Mojave occurred by8.7 ka,with playa conditions dominating the *** the history of lake level elevations and a simplified,precipitationdischarge/evaporation model,we infer that the late Pleistocene hydrologic conditions resulting in Lake Mojave overflow at Spillway bay in Silver Lake lie between two sets of conditions:(1) a 50%increase in precipitation in the headwater catchment resulting in annual flood events reaching SiLDB with discharges three times that of the

关键词： Lake Late Quaternary paleoenvironments of ancient Lake Mojave-reconstructing the history from stratigraphy,sedimentology,soils,geomorphology and radiocarbon dating plus some modeling on the paleohydrology

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：