Showing 16 of 516 papers in Earth & Space

Diurnal Variation Characteristics of Summer Precipitation in the Tianshan Mountains of Xinjiang and Its Relationship with Altitude: Postprint

Guo Yulin, Zhao Yong
2022-01-21 ChinaXiv: chinaxiv-202201.00075

The Tianshan Mountains region represents the most precipitation-abundant area within the arid region of Xinjiang. Existing research on precipitation in this area has predominantly employed daily or coarser-scale data, with relatively limited analysis of diurnal variation characteristics. Based on ho…

Analysis of Variation Characteristics of Consecutive Precipitation-Free Days in the Desert Steppe of Inner Mongolia from 1960 to 2020 (Postprint)

Bolor Chimge
2022-01-21 ChinaXiv: chinaxiv-202201.00076

Based on daily precipitation data from nine meteorological stations in the desert steppe of Inner Mongolia and reanalysis data from the National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR), this study employs statistical methods to analyze the characte…

Glacier Variations in the Pumqu Basin during 1990–2020 and Their Response to Climate Change: Postprint

Tang Yuanhang, Li Mengqi, Deng Ling
2022-01-21 ChinaXiv: chinaxiv-202201.00078

Based on Landsat series imagery, Digital Elevation Model (DEM), and other datasets, glacier boundary information in the Pengqu River basin from 1990 to 2020 was extracted using remote sensing image processing and visual interpretation methods to investigate the distribution and variation of glacier …

Postprint: Coordination Analysis of Water Resources Utilization in the Five Northwestern Provinces and Autonomous Regions of China

Li Xiuhua, WU Chunyuan
2022-01-21 ChinaXiv: chinaxiv-202201.00080

The coordinated utilization of water resources is the foremost challenge for the economic, social, and ecological sustainable development of the five northwestern provinces and autonomous regions of China. Employing synergy analysis methods and a coupling coordination degree model, this study analyz…

Postprint: A Compression Study of Pulsar Candidate Diagnostic Images Based on White Block Skipping Coding and Deep Neural Networks

Jiang Jiatao, Xie Xiaoyao, Yu Xuhong
2022-01-14 ChinaXiv: chinaxiv-202201.00046

The volume of candidate diagnostic images generated by FAST pulsar searches is increasing exponentially, posing significant challenges to scientific data management and necessitating urgent research into compression methods to enable efficient storage and accelerated network transmission and sharing…

Multivariate Regression Estimation of Temperature Signals in the Active Reflector Health Monitoring System for the FAST Project (Postprint)

Sun Xiao, Wang Qingmei, Li Zhenwei, Qiao Feng, Chu Jingjing
2022-01-14 ChinaXiv: chinaxiv-202201.00047

In large-scale structural health monitoring systems, temperature sensor failures can pose safety hazards. Based on the active reflector health monitoring system of the FAST project, we extracted and analyzed the linear correlations among data from nine measurement points, grouped candidate variables…

Postprint: Organization Methods for Space Astronomical Satellite Data Based on Heterogeneous Databases

Yang Xiaoyan, Sun Xiaojuan, Shi Tao, Liu Zhiqi, Jizhou Tong
2022-01-14 ChinaXiv: chinaxiv-202201.00049

As the volume of data acquired by space astronomical satellites continues to grow, data applications are playing an increasingly significant role. In existing ground systems for astronomical satellites, data storage methods and organization approaches vary considerably, with data volumes reaching pe…

WeChat-Based Remote Observatory Control Software Design Postprint

He Shousheng, Wang Chuanjun, Yufeng Fan, Yu Xiaoguang, Wang Deqing, Huang Yongping, Wang Jiankun
2022-01-14 ChinaXiv: chinaxiv-202201.00051

Remote observatories offer advantages such as high observation efficiency and low operating costs, making remote observation applications increasingly widespread. The development of 5G network technology has enabled remote observation using mobile terminals such as smartphones, while advancements in…

Research on Key Issues and Metric Validation for BeiDou Navigation Satellite System International Civil Aviation Standards: Post-Print

Chen Ying, Lu Yun, Liu Cheng, Shao Bo, Zhang Jian, Yuan Bin
2022-01-14 ChinaXiv: chinaxiv-202201.00045

To promote the application of Global Navigation Satellite Systems (GNSS) in the international aviation domain, the International Civil Aviation Organization (ICAO) is conducting research, validation, and upgrade activities for Standards and Recommended Practices (SARPs) applicable to the BeiDou Navi…

Land use/land cover change responses to ecological water conveyance in the lower reaches of Tarim River, China (Postprint)

WANG Shanshan, ZHOU Kefa, ZUO Qiting, WANG Jinlin, WANG Wei, WANG Shanshan
2021-12-30 ChinaXiv: chinaxiv-202201.00021

The Tarim River is the longest inland river in China and is considered as an important river to protect the oasis economy and environment of the Tarim Basin. However, excessive exploitation and over-utilization of natural resources, particularly water resources, have triggered a series of ecological…

Mass balance of saline lakes considering inflow loads of rivers and groundwater: the case of Lake Issyk-Kul, Central Asia (Postprint)

Kei SAITOH, Rysbek SATYLKANOV, Kenji OKUBO, Kei SAITOH
2021-12-30 ChinaXiv: chinaxiv-202201.00022

This study aimed to elucidate the influence of inflow water on the salinity concentration process of a saline lake and the mass balance of Lake Issyk-Kul, a tectonic saltwater lake in Kyrgyzstan. Based on the survey results and meteorological data from 2012 to 2015, we analyzed the dissolved chemica…

Drought and Flood Characteristics in the Farming-Pastoral Ecotone of Northern China Based on the Standardized Precipitation Index Postprint

CAO Huicong, YAN Dandan, JU Yuelin, CAO Huicong
2021-12-30 ChinaXiv: chinaxiv-202201.00023

The farming-pastoral ecotone of northern China (FPENC) provides an important ecological barrier which restrains the invasion of desert into Northwest China. Studying drought and flood characteristics in the FPENC can provide scientific support and practical basis for the protection of the FPENC. Bas…

Contribution of underlying terrain to sand dunes: evidence from the Qaidam Basin, Northwest China Postprint

LI Jiyan, QU Xin, DONG Zhibao, Yingying Cai, LIU Min, Ren Xiaozong, CUI Xujia, LI Jiyan
2021-12-30 ChinaXiv: chinaxiv-202201.00025

Underlying terrain strongly influences dune formation. However, the impacts of underlying terrain on the dune formation are poorly studied. In the present research, we focused on dunes that formed in the alluvial fans and dry salt flats in the Qaidam Basin, Northwest China. We quantified the dunes' …