Daily Spatial Footprint of Warsaw Metropolitan Area (Poland) Commuters in Light of Volunteered Geographic Information and Common Factors of Urban Sprawl. A Pilot Study

2020 ◽  
pp. 365-377
Author(s):  
Veranika Kaleyeva ◽  
Piotr A. Werner
Keyword(s):  
Pilot Study ◽  
Metropolitan Area ◽  
Urban Sprawl ◽  
Common Factors ◽  
Volunteered Geographic Information ◽  
Geographic Information

Volunteered geographic information

Geography ◽  
2014 ◽  
Vol 99 (3) ◽  
pp. 157-160
Author(s):  
Doreen S. Boyd ◽  
Giles M. Foody
Keyword(s):  
Volunteered Geographic Information ◽  
Geographic Information

Assessing The Quality of Water Depth Derived From Volunteered Geographic Information (VGI) For Flood Monitoring. A Case Study of Hurricane Harvey In Harris County, Texas

2021 ◽  
Author(s):  
Abdullatif Alyaqout ◽  
T. Edwin Chow ◽  
Alexander Savelyev
Keyword(s):  
Water Depth ◽  
Temporal Distribution ◽  
Volunteered Geographic Information ◽  
Temporal Variations ◽  
Geographic Information ◽  
Text Messages ◽  
Quality Of Water ◽  
Significant Difference ◽  
Flood Monitoring

Abstract The primary objectives of this study are to 1) assess the quality of each volunteered geographic information (VGI) data modality (text, pictures, and videos), and 2) evaluate the quality of multiple VGI data sources, especially the multimedia that include pictures and videos, against synthesized water depth (WD) derived from remote sensing (RS) and authoritative data (e.g. stream gauges and depth grids). The availability of VGI, such as social media and crowdsourced data, empowered the researchers to monitor and model floods in near-real-time by integrating multi-sourced data available. Nevertheless, the quality of VGI sources and its reliability for flood monitoring (e.g. WD) is not well understood and validated by empirical data. Moreover, existing literature focuses mostly on text messages but not the multimedia nature of VGI. Therefore, this study measures the differences in synthesized WD from VGI modalities in terms of (1) spatial and (2) temporal variations, (3) against WD derived from RS, and (4) against authoritative data including (a) stream gauges and (b) depth grids. The results of the study show that there are significant differences in terms of spatial and temporal distribution of VGI modalities. Regarding VGI and RS comparison, the results show that there is a significant difference in WD between VGI and RS. In terms of VGI and authoritative data comparison, the analysis revealed that there is no significant difference in WD between VGI and stream gauges, while there is a significant difference between the depth grids and VGI.

scholarly journals Structures data collection for the national map using volunteered geographic information

2012 ◽  
Author(s):  
Barbara S. Poore ◽  
Eric B. Wolf ◽  
Erin M. Korris ◽  
Jennifer L. Walter ◽  
Greg D. Matthews
Keyword(s):  
Data Collection ◽  
Volunteered Geographic Information ◽  
Geographic Information

scholarly journals Analisis Faktor-Faktor yang Mempengaruhi Urban Sprawl di Kawasan Cekungan Bandung

2021 ◽  
Vol 23 (1) ◽  
pp. 105-114
Author(s):  
Lutfia Nursetya Fuadina ◽  
Ernan Rustiadi ◽  
Andrea Emma Pravitasari
Keyword(s):  
Metropolitan Area ◽  
Urban Sprawl ◽  
Secondary Data ◽  
Spatial Diversity ◽  
Toll Road ◽  
Factors Influencing ◽  
Negative Effect ◽  
Landsat Satellite ◽  
Positive Effect ◽  
Field Area

Bandung Metropolitan Area is the second largest metropolitan area in Indonesia. Bandung Metropolitan Area also represents the type of metropolitan in Asia which has massive urbanization characteristic that caused by increasing economic growth. This research aims to analyze the spatial diversity of the factors influencing urban sprawl in Bandung Metropolitan Area. The data used in this study were secondary data consisting of Landsat satellite imagery and facilities data obtained from the Central Statistics Agency (BPS) in the year of 2003 and 2014. The methodology used in this study was Geograpically Weighted Regression (GWR) analysis. The results showed that each variables has a different influence on each locations. Population density variable has a positive effect on the percentage of built up area. Whereas the variable of distance to Bandung City, the percentage of paddy field area, the percentage of forest area, and the distance to the toll road has a negative effect on the percentage of built up area. While the effect of the District Development Index variable toward the percentage of built up area varies in each research location.

scholarly journals Highway expansion and urban sprawl in the Jakarta Metropolitan Area

2022 ◽  
Vol 112 ◽  
pp. 105856
Author(s):  
Andhika Putra Pratama ◽  
Muhammad Halley Yudhistira ◽  
Eric Koomen
Keyword(s):  
Metropolitan Area ◽  
Urban Sprawl
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