Articles | Volume 14, issue 2
https://doi.org/10.5194/essd-14-517-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-14-517-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
08 Feb 2022
Data description paper |
| 08 Feb 2022
| 08 Feb 2022
A global dataset of annual urban extents (1992–2020) from harmonized nighttime lights
State Key Laboratory of Earth Surface Processes and Resource Ecology,
Beijing Normal University, Beijing, 100875, China
Key Laboratory of Environmental Change and Natural Disaster, Beijing
Normal University, Beijing, 100875, China
Center for Geodata and Analysis, Faculty of Geographical Science,
Beijing Normal University, Beijing, 100875, China
Changxiu Cheng
CORRESPONDING AUTHOR
State Key Laboratory of Earth Surface Processes and Resource Ecology,
Beijing Normal University, Beijing, 100875, China
Key Laboratory of Environmental Change and Natural Disaster, Beijing
Normal University, Beijing, 100875, China
Center for Geodata and Analysis, Faculty of Geographical Science,
Beijing Normal University, Beijing, 100875, China
Department of Geological and Atmospheric Sciences, Iowa State
University, Ames, IA 50011, USA
Xuecao Li
College of Land Science and Technology, China Agricultural
University, Beijing, 100083, China
State Key Laboratory of Earth Surface Processes and Resource Ecology,
Beijing Normal University, Beijing, 100875, China
Key Laboratory of Environmental Change and Natural Disaster, Beijing
Normal University, Beijing, 100875, China
Center for Geodata and Analysis, Faculty of Geographical Science,
Beijing Normal University, Beijing, 100875, China
Changqing Song
State Key Laboratory of Earth Surface Processes and Resource Ecology,
Beijing Normal University, Beijing, 100875, China
Center for Geodata and Analysis, Faculty of Geographical Science,
Beijing Normal University, Beijing, 100875, China
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This article quantify the effect of the Wenchuan MS 8.0 and Lushan MS 7.0 earthquakes on the size distribution of earthquakes along the Longmenshan fault. The results depict the decreasing trends of b values before the two large earthquakes in the study region. The major aftershock active periods of the Wenchuan MS 8.0 and Lushan MS 7.0 earthquakes were less than one year and ten months. Moreover, both large earthquakes do not change the pattern of
high in the north, low in the south.
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Short summary
We generated a unique dataset of global annual urban extents (1992–2020) using consistent nighttime light observations and analyzed global urban dynamics over the past 3 decades. Evaluations using other urbanization-related ancillary data indicate that the derived urban areas are reliable for characterizing spatial extents associated with intensive human settlement and high-intensity socioeconomic activities. This dataset can provide unique information for studying urbanization and its impacts.
We generated a unique dataset of global annual urban extents (1992–2020) using consistent...
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