基于DEM的内蒙古狼山地貌参数提取及其构造抬升的差异性分析

刘晓彤; 张绪教; 叶培盛; 何泽新; 傅连珍; 贾丽云; 何祥丽

基于DEM的内蒙古狼山地貌参数提取及其构造抬升的差异性分析

1.
中国地质大学地球科学与资源学院, 北京 100083
2.
中国地质科学院地质力学研究所, 北京 100081

基金项目:

国土资源部公益性行业科研专项"我国不同季风区古气候演化差异及成因机制研究" 201211077-3

中国地质调查局项目"内蒙古1 :5万呼勒斯太苏木(K48E017024) 等四幅填图试点" 12120114042101

内蒙古国土资源厅2014年地质遗迹保护专题"巴彦淖尔国家地质公园狼山山前构造地貌过程及其环境效应研究" BSZFCG2015-HW-00403

详细信息

作者简介:
刘晓彤(1989-), 女, 硕士研究生, 主要研究方向第四纪环境。E-mail:13120366829@163.com

通讯作者:
张绪教(1964-), 男, 博士, 副教授, 主要从事第四纪地质、新构造运动的教学及科研。E-mail:zhangxj@cugb.edu.cn

中图分类号: P542
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- 被引次数: 0
出版历程
- 收稿日期: 2015-09-20
- 刊出日期: 2016-03-01

EXTRACTION OF TECTONIC GEOMORPHOLOGIC PARAMETRES BASED ON DEM AND ANALYSIS OF DIFFERENCE ON TECTONIC ACTIVITY ABOUT LANGSHAN MOUNTAIN, INNER MONGOLIA

1.
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

摘要

摘要: 基于30 m分辨率DEM数据, 利用ArcGIS10.0对内蒙古狼山东南坡河流流域地貌参数进行提取, 精确计算了其中15条规模较大的北西—南东向河流的面积-高程积分值(HI), 并据此对河流发育阶段以及构造运动进行分析。研究结果显示有8条河流的HI值处于0.3~0.6之间, 属于河流发展的壮年阶段; 7条河流的HI值大于0.6, 为幼年期, 未出现老年期河流。狼山西南部河流河谷V1—V14的HI值变化平缓, 波动幅度不大, 构造运动呈现出先增强后减弱的态势; 中北部河流V14—V22的HI值变化较剧烈, 尤其是V14—V19, 呈明显上升趋势, 河流受侵蚀后残存体积增多, 构造运动活跃性下降; V19以北HI值持续下降, 其构造运动的活跃性增加。由此认为狼山从西南到东北总体呈现增强—减弱—增强的差异性运动状态, 该结论与前人所做山前构造地貌研究结果较为一致。
- 新构造运动 /
- DEM /
- 河流地貌面积-高程积分 /
- 内蒙古狼山 /
Abstract: This paper extracted the drainage basins of 15 rivers on the southeast slope of Langshan Mountain and narrowly calculated their HI values using ArcGIS10.0 based on 30 meter resolution DEM data, then analysed the tectonic activities and geomophological evolutions in this region. The results showed that the HI values of 8 rivers were between 0.3 and 0.6, indicating that these rivers were in their mature stage; the HI values of 7 rivers were greater than 0.6, stating clearly that these rivers were in their juvenile stage. Moreover, there were no rivers in old age. The HI values of V1~V14 changed gently, with the tectonic movement first increasing and then decreasing. The area-altitude points of V14~V22 changed tempestuously, especially rivers V14~V19, which showed a clear upward trend and the river eroded remnant volume increased in the result the tectonic activity decreased. HI values the rivers north of V19 continued to decline, and its tectonic activity increased. The Langshan Mountain was suggested in enhanced-weakening-enhanced diversity state of motion from the southwest to the northeast with the conclusion of previous work in tectonic geomorphology of the consistent results.
- neotectonics /
- DEM /
- fluvial geomorphology /
- hypsometric integral (HI) /
- Langshan Mountain

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图 1 研究区概况(据文献[23]修改)

Figure 1. Sketch map of study area

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图 2 研究区流域分布

Figure 2. the distribution of rivers in study area

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图 3 水系密度图

Figure 3. Drainage density of valley

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图 4 河谷HI值变化曲线

Figure 4. Thechanges of HI value

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图 5 河谷高差与HI对比曲线

Figure 5. relif and HI value on the velly

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图 6 研究区构造运动变化趋势

Figure 6. The changes of tectonic movement in study area

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图 7 狼山整体构造运动变化趋势图

Figure 7. chenges of tectonic movements in Langshan

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表 1 各流域参数

Table 1. Parameters of every valley

河谷序号	流域面积/km²	河网总长度/km	平均高程/m	河网密度	HI值	高差/m
V2	66.55	40.23	1570	0.605	0.680	649
V3	34.77	20.63	1517	0.593	0.598	676
V4	71.48	38.66	1568	0.541	0.639	698
V5	218.14	119.53	1664	0.548	0.584	920
V7	243.11	131.75	1706	0.542	0.562	1050
V9	63.35	38.76	1688	0.612	0.581	1008
V10	113.05	60.07	1800	0.531	0.650	1053
V13	55.85	30.16	1693	0.540	0.582	1033
V14	149.51	83.72	1852	0.560	0.647	1141
V15	140.34	77.28	1935	0.551	0.674	1217
V18	142.68	71.79	1990	0.503	0.711	1254
V19	376.46	199.58	1893	0.530	0.638	1265
V20	86.13	44.57	1746	0.517	0.585	1110
V21	66.85	37.40	1661	0.559	0.514	1116
V22	123.67	65.53	1692	0.530	0.505	1215

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