印尼乌兰三角洲时空特征、演变及控制因素

IF 0.7 Q4 GEOGRAPHY, PHYSICAL

Geographia Technica Pub Date : 2021-03-09 DOI:10.21163/GT_2021.163.04

B. Septiangga, B. Mutaqin

{"title":"印尼乌兰三角洲时空特征、演变及控制因素","authors":"B. Septiangga, B. Mutaqin","doi":"10.21163/GT_2021.163.04","DOIUrl":null,"url":null,"abstract":": The evolution of the Wulan Delta began after the construction of the Wulan River Canal in 1892. It alters the shoreline erosion and accretion that affect the land dynamics of the coastal area. This study aims to analyze the spatio-temporal evolution of the Wulan Delta, including the shoreline and its dynamics, as well as the geomorphological processes that affect it. The shoreline change was extracted digitally from Landsat satellite images and divided into four periods, i.e., 1995-2000, 2000-2011, 2011-2015, and 2015-2020. We used the histogram thresholding method to separate the land from the sea and produce the shoreline as the interface. This research employed field check and focus group discussion for identifying the cause and impact of shoreline dynamics in the research area. The results show that land loss and accumulation over 25 years (1995-2020) are -7.16 km 2 and +6.58 km 2 , respectively. In Wulan Delta, the erosion is due to high waves and sedimentation due to mangrove planting and high sediment from the rivers. The development rates of the Wulan Delta for the period of 1995-2020 were 73,200 m 2 /year.","PeriodicalId":45100,"journal":{"name":"Geographia Technica","volume":" ","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"SPATIO-TEMPORAL ANALYSIS OF WULAN DELTA IN INDONESIA: CHARACTERISTICS, EVOLUTION, AND CONTROLLING FACTORS\",\"authors\":\"B. Septiangga, B. Mutaqin\",\"doi\":\"10.21163/GT_2021.163.04\",\"DOIUrl\":null,\"url\":null,\"abstract\":\": The evolution of the Wulan Delta began after the construction of the Wulan River Canal in 1892. It alters the shoreline erosion and accretion that affect the land dynamics of the coastal area. This study aims to analyze the spatio-temporal evolution of the Wulan Delta, including the shoreline and its dynamics, as well as the geomorphological processes that affect it. The shoreline change was extracted digitally from Landsat satellite images and divided into four periods, i.e., 1995-2000, 2000-2011, 2011-2015, and 2015-2020. We used the histogram thresholding method to separate the land from the sea and produce the shoreline as the interface. This research employed field check and focus group discussion for identifying the cause and impact of shoreline dynamics in the research area. The results show that land loss and accumulation over 25 years (1995-2020) are -7.16 km 2 and +6.58 km 2 , respectively. In Wulan Delta, the erosion is due to high waves and sedimentation due to mangrove planting and high sediment from the rivers. The development rates of the Wulan Delta for the period of 1995-2020 were 73,200 m 2 /year.\",\"PeriodicalId\":45100,\"journal\":{\"name\":\"Geographia Technica\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2021-03-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Geographia Technica\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21163/GT_2021.163.04\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"GEOGRAPHY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geographia Technica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21163/GT_2021.163.04","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOGRAPHY, PHYSICAL","Score":null,"Total":0}

引用次数: 1

摘要

：乌兰三角洲的演变始于1892年乌兰河运河的修建。它改变了影响沿海地区土地动态的海岸线侵蚀和吸积。本研究旨在分析乌兰三角洲的时空演变，包括海岸线及其动力学，以及影响它的地貌过程。从陆地卫星图像中数字提取海岸线变化，并将其分为四个时期，即1995-2000年、2000-2011年、2011-2015年和2015-2020年。我们使用直方图阈值法将陆地与海洋分离，并产生海岸线作为界面。本研究采用了实地检查和焦点小组讨论的方式，以确定研究区域海岸线动力学的原因和影响。结果表明，25年（1995-2020年）的土地流失和累积分别为-7.16km2和+6.58km2。在乌兰三角洲，侵蚀是由于高浪和红树林种植和河流高泥沙造成的沉积。乌兰三角洲1995-2020年的发展速度为73200 m2/年。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

SPATIO-TEMPORAL ANALYSIS OF WULAN DELTA IN INDONESIA: CHARACTERISTICS, EVOLUTION, AND CONTROLLING FACTORS

: The evolution of the Wulan Delta began after the construction of the Wulan River Canal in 1892. It alters the shoreline erosion and accretion that affect the land dynamics of the coastal area. This study aims to analyze the spatio-temporal evolution of the Wulan Delta, including the shoreline and its dynamics, as well as the geomorphological processes that affect it. The shoreline change was extracted digitally from Landsat satellite images and divided into four periods, i.e., 1995-2000, 2000-2011, 2011-2015, and 2015-2020. We used the histogram thresholding method to separate the land from the sea and produce the shoreline as the interface. This research employed field check and focus group discussion for identifying the cause and impact of shoreline dynamics in the research area. The results show that land loss and accumulation over 25 years (1995-2020) are -7.16 km 2 and +6.58 km 2 , respectively. In Wulan Delta, the erosion is due to high waves and sedimentation due to mangrove planting and high sediment from the rivers. The development rates of the Wulan Delta for the period of 1995-2020 were 73,200 m 2 /year.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Geographia Technica GEOGRAPHY, PHYSICAL-

CiteScore

2.30

自引率

14.30%

发文量

期刊介绍： Geographia Technica is a journal devoted to the publication of all papers on all aspects of the use of technical and quantitative methods in geographical research. It aims at presenting its readers with the latest developments in G.I.S technology, mathematical methods applicable to any field of geography, territorial micro-scalar and laboratory experiments, and the latest developments induced by the measurement techniques to the geographical research. Geographia Technica is dedicated to all those who understand that nowadays every field of geography can only be described by specific numerical values, variables both oftime and space which require the sort of numerical analysis only possible with the aid of technical and quantitative methods offered by powerful computers and dedicated software. Our understanding of Geographia Technica expands the concept of technical methods applied to geography to its broadest sense and for that, papers of different interests such as: G.l.S, Spatial Analysis, Remote Sensing, Cartography or Geostatistics as well as papers which, by promoting the above mentioned directions bring a technical approach in the fields of hydrology, climatology, geomorphology, human geography territorial planning are more than welcomed provided they are of sufficient wide interest and relevance.