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Full-Text Articles in Architecture
Long-Term Changes Of Open-Surface Water Bodies In The Yangtze River Basin Based On The Google Earth Engine Cloud Platform, Yue Deng, Wei-Guo Jiang, Zhenghong Tang, Ziyan Ling, Zhifeng Wu
Long-Term Changes Of Open-Surface Water Bodies In The Yangtze River Basin Based On The Google Earth Engine Cloud Platform, Yue Deng, Wei-Guo Jiang, Zhenghong Tang, Ziyan Ling, Zhifeng Wu
Community and Regional Planning Program: Faculty Scholarly and Creative Activity
The spatiotemporal changes of open-surface water bodies in the Yangtze River Basin (YRB) have profound influences on sustainable economic development, and are also closely relevant to water scarcity in China. However, long-term changes of open-surface water bodies in the YRB have remained poorly characterized. Taking advantage of the Google Earth Engine (GEE) cloud platform, this study processed 75,593 scenes of Landsat images to investigate the long-term changes of open-surface water bodies in the YRB from 1984 to 2018. In this study, we adopted the percentile-based image composite method to collect training samples and proposed a multiple index water detection rule …
(Mis)Communicating With Geographic Information System Mapping: Part 1--Choosing Units Of Representation, Rodrigo Cantarero, Maria Deguzman, Sarah Taylor, Soo-Young Hong, Jeong-Kyun Choi
(Mis)Communicating With Geographic Information System Mapping: Part 1--Choosing Units Of Representation, Rodrigo Cantarero, Maria Deguzman, Sarah Taylor, Soo-Young Hong, Jeong-Kyun Choi
Community and Regional Planning Program: Faculty Scholarly and Creative Activity
Extension professionals are increasingly using geographic information system (GIS) technology to develop and inform programs and services. In this article, we use a mapping exercise to demonstrate how the unit of data can be applied and inadvertently misrepresented in GIS mapping. We contrast the use of counts, percentages, and location quotients with the same data and the resulting divergence in maps. The discussion addresses ideal circumstances for using each unit of data. Overall, the article illustrates the need for Extension professionals to be cognizant of the benefits and limitations of various units of data to avoid miscommunication when using GIS …
Detection Of Linkage Between Solar And Lunar Cycles And Runoff Of The World's Large Rivers, Zhijun Dai, Jinzhou Du, Zhenghong Tang, Suying Ou, Samuel Brody, Xuefei Mei, Jietai Jing, Shoubing Yu
Detection Of Linkage Between Solar And Lunar Cycles And Runoff Of The World's Large Rivers, Zhijun Dai, Jinzhou Du, Zhenghong Tang, Suying Ou, Samuel Brody, Xuefei Mei, Jietai Jing, Shoubing Yu
Community and Regional Planning Program: Faculty Scholarly and Creative Activity
It is an ongoing concern that global hydrological cycle can be likely intensified under context of climate change and anthropogenic actions. Here, our results show that the solar and lunar periodic motions (SLPMs) have substantial impact on the runoff of the world's large rivers. We estimate that SLPMs can produce a change of the world's large rivers runoff by as much as 6.7%. Although climate models suggest that the increased frequency of extreme events is attributed to anthropogenic activities, it is out of our expectation that as much as 73% and 85% of the extreme flood and drought events (based …
(Mis)Communicating With Geographic Information System Mapping: Part 2—Determining Data Cutoffs, Rodrigo Cantarero, Maria Deguzman, Sarah Taylor, Soo-Young Hong, Jeong-Kyun Choi
(Mis)Communicating With Geographic Information System Mapping: Part 2—Determining Data Cutoffs, Rodrigo Cantarero, Maria Deguzman, Sarah Taylor, Soo-Young Hong, Jeong-Kyun Choi
Community and Regional Planning Program: Faculty Scholarly and Creative Activity
The increasing use of geographic information system (GIS) technology in various fields suggests the need for professionals, including those in Extension, to be mindful of communicating data accurately and effectively. This article examines approaches to creating classes or groupings within data as well as the weaknesses of each approach. Data break units discussed in the article include equal intervals, quantiles, and units resulting from natural breaks. Ideal situations for each type of data break are presented. The article emphasizes the need for Extension professionals to consider the effects of data grouping to avoid miscommunication when using GIS mapping.