新疆昭苏夏塔冰川地貌特征及成因分析

夏塔位于新疆哈尔克山北麓和昭苏盆地之间,处于西天山造山带的核心部位,该地区在漫长的地质历史时期中,在各种地质营力的综合作用下,形成了以冰川地貌为主体的地质遗迹景观资源。在野外系统调查的基础上,总结了研究区冰川地貌具有空间分带性特征,冰川地貌以现代冰川为核心、四周发育着众多以典型冰蚀地貌为主要特征的古冰川地貌,辅以冰川堆积地貌和冰水沉积地貌,观赏价值较高。通过冰川地貌成因分析,进一步提升冰川地貌的科学内涵,为景区开发建设提供科学依据。     

新疆昭苏夏塔冰川地貌特征及成因分析

夏塔位于新疆哈尔克山北麓和昭苏盆地之间,处于西天山造山带的核心部位,该地区在漫长的地质历史时期中,在各种地质营力的综合作用下,形成了以冰川地貌为主体的地质遗迹景观资源.在野外系统调查的基础上,总结了研究区冰川地貌具有空间分带性特征,冰川地貌以现代冰川为核心、四周发育着众多以典型冰蚀地貌为主要特征的古冰川地貌,辅以冰川堆...     

四姑娘山国家风景名胜区旅游资源可持续利用对策分析

四姑娘山景区风光旖旎,旅游开发已取得很大成效。从景区的可持续利用和发展出发,分析并推出景区内可再开发利用的旅游产品,提高景区景观资源的品位和影响力,促进地方社会经济的繁荣。     

川西稻城古冰帽的地貌特征与冰期探

稻城古冰帽现保存有各种类型的冰川侵蚀和堆积地貌，依其规模大小、分布范围和组合特征可明显区分出四个地貌地带。数量众多的各种冰种作用遗迹表明，中更新世以来稻城古冰帽地区曾先后经历过三次冰川作用。     

川西稻城古冰帽的地貌特征与冰期探讨

稻城古冰帽现保存有各种类型的冰川侵蚀和堆积地貌，依其规模大小、分布范围和组合特征可明显区分出四个地貌地带。数量众多的各种冰川作用遗迹表明，中更新世以来稻城古冰帽地区曾先后经历过三次冰川作用。     

祁连山摆浪河谷地的冰川地貌与冰期

祁连山摆浪河上游是一个以前研究者未曾涉足的地方,我们在这里发现6套保存完好的古冰川沉积和与之对应的冰水阶地以及上覆较厚的黄土 堆积,根据地貌地层学研究和^14C、TL、ESR测年,确认它们分别代表了小冰期、新冰期、同位素2阶段、4阶段、6阶段和12阶段6次冰川作用,是迄今在祁连山地区发现的相对比较确定的清晰齐全的第四纪冰川序列,发生于氧同位素12阶段的中梁赣冰期,表明抬升中的祁连山至少于460kaBP前与冰期气候耦合,进入了当时的冰冻圈。     

山东崂山花岗岩地质地貌特征

崂山位于山东省青岛市东部，是中国海岸上海拔最高的山。崂山花岗岩是苏鲁地区燕山期花岗岩带中的重要组成部分，是中国东部晚中生代较典型的由钙碱性岩套和碱性岩套构成的I—A型复合花岗岩体。在长期的地球内外应力作用下，崂山形成了丰富、独特的花岗岩地貌类型，发育峰林、峰墙、崮、洞、像形石、岩臼等花岗岩地貌和砾石堤、巨砾扇、砾石海岸、砾石滩等独特的花岗岩堆积地貌。特殊的大地构造位置和花岗岩类型、丰富的地质资源、典型而独特的花岗岩地貌景观使得崂山花岗岩地质地貌具有极高的科研、科普和旅游开发价值。     

东北地区末次冰期以来气候地貌的若干特征

末次冰期,长白山天池周围有冰斗发育,高2200m左右,东北的广大地区为冰缘环境。许多冰缘形态至今控制着地貌景观。冰后期,长白山的冰川地貌受到冰缘环境的控制,广大地区的冰缘地貌则受到温暖环境的改造。作为气候地貌界限的冰雪线,由末次冰期的44—45°N移至今日的51°N附近。末次冰期以来,气候地貌带表现出沿经度和纬度平行移动的特点     

川西沙鲁里山第四纪冰川及与邻区之对比

沙鲁里山是研究第四纪冰川的最佳场所之一。可划分四个冰期,第一冰期为大陆冰盖,第二、三期及现代冰川为山岳冰川;整体反映第四纪地壳不断抬升,气候不断变暖,冰川不断向高山退缩的过程。     

四川大九寨国际旅游区生态功能保护研究

大九寨国际旅游区位于四川阿坝州东北部,包括九寨沟、松潘、若尔盖和红原四县范围。集中了以九寨沟层湖瀑叠景观、黄龙边石坝彩池景观、高寒湿地景观等为代表的中国西部旅游资源优势。但随着旅游业的快速发展,生态功能受到了较为严重的威胁,部分景观开始退化、消亡。为此,本文对其生态环境现状、生态功能进行剖析,探讨保护目标和对策,做到合理利用和可持续发展。     

涟江源区河流地貌特征及其与构造的响应

通过对涟江源区河流地貌及地质构造的调查发现,区内河谷地貌平面展布形式有纵谷、横谷及斜向谷,纵断面形态主要为"V"型、次之为"U"型.支流与干流交汇处发育三处盆地,各盆地中均发育三级阶地,分别形成于距今56.7±3.6 Ka,24.2±2.4Ka,0.8±0.250 Ka.区内河谷地貌、阶地特征与新构造运动地壳间歇性抬升...     

珠穆朗玛峰东绒布冰川厚度测量与地形特征分析

冰川地形特征的研究是构建冰川流动模型的基础. 根据探地雷达获取的冰川厚度数据(2009年)和1∶5万地形图(1974年), 得到沿珠穆朗玛峰东绒布冰川主流线的冰厚度分布以及5条冰川槽谷的形态特征. 结果表明: 沿东绒布冰川主流线的平均表面坡度约为0.08, 平均厚度约为190 m, 最大厚度约为320 m (海拔6 300 m); 在1974-2009年间沿冰川主流线冰厚度平均减薄约30 m; 东绒布冰川表碛覆盖区与白冰区尚未分离, 目前很可能是一条停滞冰川, 冰川末端位于海拔5 540 m附近(下游方向); 东绒布冰川槽谷形态接近于V型, 而不是U型(b指数变化范围约为0.7~1.3).     

High‐resolution bathymetric mapping reveals subaqueous glacial landforms in the Arctic alpine lake Tarfala,Sweden

In Arctic alpine regions, glacio‐lacustrine environments respond sensitively to variations in climate conditions, impacting, for example,glacier extent and rendering former ice‐contact lakes into ice distal lakes and vice versa. Lakefloors may hold morphological records of past glacier extent, but remoteness and long periods of ice cover on such lakes make acquisition of high‐resolution bathymetric datasets challenging. Lake Tarfala and Kebnepakte Glacier, located in the Kebnekaise mountains, northern Sweden, comprise a small, dynamic glacio‐lacustrine system holding a climate archive that is not well studied. Using an autonomous surface vessel, a high‐resolution bathymetric dataset for Lake Tarfala was acquired in 2016, from which previously undiscovered end moraines and a potential grounding line feature were identified. For Kebnepakte Glacier, structure‐from‐motion photogrammetry was used to reconstruct its shape from photographs taken in 1910 and 1945. Combining these methods connects the glacial landform record identified at the lakefloor with the centennial‐scale dynamic behaviour of Kebnepakte Glacier. During its maximum 20^th century extent, attained c. 1910, Kebnepakte Glacier reached far into Lake Tarfala, but had retreated onto land by 1945, at an average of 7.9 m year^–1. Copyright © 2019 John Wiley & Sons, Ltd.     

Changes of the Hailuogou Glacier, Mt. Gongga,China, against the Background of Global Warming in the Last Several Decades

Great change, associated with global warming, has occurred at the Hailuogou (海螺沟)has retreated 1 822 m in the past 106 years, with an annual mean retreat of 17.2 m, and the front elevation has risen by 300 m since 1823. Comparison of glacier variations and temperature fluctuations in China and the Northern Hemisphere, over the last 100 years, indicates that glacier retreat stages occurred during the warm phase, and vice versa. Mass balance records during 1959/60--2003/04 have shown that the glacier has suffered a constant mass loss of snow and ice. The accumulated mass balance, -10.83 m water equivalent, indicates an annual mean value of -0.24 m water equivalent. The correlation between the mass balance and temperature is significant, which also indicates that climate warming is the crucial cause of glacier loss.Local hydrological and climatic data demonstrate that runoff from the glacier has been increasing both seasonally and annually.The correlation analysis and trend analysis indicate that ice and snow melted water is the main cause of an increase in the runoff. As the climate has become warmer, changes in the glacier surface morphology have obviously occurred. These include a decrease in glacier thickness, enlargement of glacial caves, and reduction of the size of clefts on the glacier surface. The ablation period has lengthened and the ablation area has expanded. A variety of factors thus provide evidence that the Hailuogou glacier has suffered a rapid loss of snow and ice as a result of climatic warming.