干旱区生态环境知识资源中心(Arid): Investigating the effects of groundwater level changes on GNSS observations in the Konya Closed Basin

Arid

DOI	10.15446/esrj.v25n4.92490
	Investigating the effects of groundwater level changes on GNSS observations in the Konya Closed Basin
	Erdogan, H.; Oktar, O.; Gergin, C.; Poyraz, F.; Arslan, N.; Yilmazturk, F.
通讯作者	Gergin, C (corresponding author)，Aksaray Univ, Engn Fac, Dept Geomat, Aksaray, Turkey.
来源期刊	EARTH SCIENCES RESEARCH JOURNAL
ISSN	1794-6190
EISSN	2339-3459
出版年	2021
卷号	25 期号:4
英文摘要	The Konya Closed Basin (KCB), inhabited by approximately 4 million people, has a semi-arid climate and has been an important agricultural and economic production area with its fertile alluvial soils. In recent years, groundwater use as a primary source in the intense need for irrigation due to climate change, drought, and wrong agricultural policies tri-ggered land subsidence in the basin by causing the aquifer system compaction. In this study, the effects of groundwater level changes obtained from groundwater monitoring stations on the positions of continuously operating GNSS stations located in KCB were investigated by time series analysis. As a result of trend component analyses of time series processed based on the ITRF08 fixed frame, it was determined that the horizontal positions of stations in this region were moving in the northeast direction (18.74 mm/year). For the up coordinates, while stations ANRK, KLUU, and NIGD had move-ments 0.56 mm/year in the up direction, the other stations moved in the down direction. The vertical movement of the KNY1 station based on 560-day data was in the down (-) direction, with an annual movement of 70.96 mm, and this was the maximum movement or velocity compared to the other stations in this region. The trend analysis of 19 wells revealed linear groundwater level changes in the down direction with a mean value of-39.22 cm/year. The decrease in the water level of the wells in the Konya Closed Basin was statistically significant for the majority of the wells and at meter level in some wells. It was determined that the linear decrease was generally caused by the reduced groundwater level in this region. The periodic component analysis showed that the movements of the GNSS stations changed from a day to a year due to several factors, such as atmospheric and hydrological loading and climatic effects.
英文关键词	Konya Closed Basin GNSS Time Series Analysis Fast Fourier Transform Groundwater Level
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000754734700004
WOS关键词	LAND SUBSIDENCE ; SURFACE DEFORMATIONS ; GPS ; DISPLACEMENTS ; BEHAVIORS ; STATION ; PROJECT ; BIFROST
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/375704
作者单位	[Erdogan, H.; Gergin, C.; Yilmazturk, F.] Aksaray Univ, Engn Fac, Dept Geomat, Aksaray, Turkey; [Oktar, O.; Poyraz, F.] Cumhuriyet Univ, Engn Fac, Dept Geomat Engn, Sivas, Turkey; [Arslan, N.] Cukurova Univ, Engn Fac, Dept Geomat Engn, Adana, Turkey
推荐引用方式 GB/T 7714	Erdogan, H.,Oktar, O.,Gergin, C.,et al. Investigating the effects of groundwater level changes on GNSS observations in the Konya Closed Basin[J],2021,25(4).
APA	Erdogan, H.,Oktar, O.,Gergin, C.,Poyraz, F.,Arslan, N.,&Yilmazturk, F..(2021).Investigating the effects of groundwater level changes on GNSS observations in the Konya Closed Basin.EARTH SCIENCES RESEARCH JOURNAL,25(4).
MLA	Erdogan, H.,et al."Investigating the effects of groundwater level changes on GNSS observations in the Konya Closed Basin".EARTH SCIENCES RESEARCH JOURNAL 25.4(2021).