scholarly journals Somma Vesuvius volcano: ground deformations from CGPS observations (2001-2012)

2013 ◽  
Vol 56 (4) ◽  
Author(s):  
Umberto Tammaro ◽  
Prospero De Martino ◽  
Francesco Obrizzo ◽  
Giuseppe Brandi ◽  
Andrea D’Alessandro ◽  
...  
Keyword(s):  
Data Processing ◽  
Volcanic Area ◽  
Gps Measurements ◽  
Contraction Phase ◽  
Ground Deformations ◽  
Strain Components ◽  
Gps Data Processing ◽  
Vesuvius Volcano ◽  
Continuous Gps ◽  
Horizontal Displacements

<p>This paper is a contribution to the evaluation of ground deformations at Somma-Vesuvius volcano by means GPS measurements from 2001 to 2012. In this study we use a dataset from nine continuous GPS stations of the Neapolitan Volcanoes Continuous GPS network (NeVoCGPS), which covers the Neapolitan volcanic area, and is operated by the Istituto Nazionale di Geofisica e Vulcanologia. The GPS data processing is performed by the Bernese software v. 5.0. The results of the data processing show that the dynamics of the Somma-Vesuvio volcano, between 2001 and 2012, is characterized by a general subsidence, with maximum values on the Gran Cono at BKNO (−11.7 ± 0.65 mm/year) and BKE1 (−4.92 ± 0.36 mm/year) stations. The subsidence decrease from the crater down to the coast and the horizontal displacements are concentrated in Gran Cono area, the youngest part of the volcano. The parameters of the principal strain components indicate that Somma-Vesuvius is affected by a predominant contraction phase, which is concentrated in the areas with the greatest altitudes.</p>

Research on Data Process of GPS in Road Surveying

2012 ◽  
Vol 433-440 ◽  
pp. 6007-6013
Author(s):  
Wei Duo Huang
Keyword(s):  
Data Processing ◽  
Gps Data ◽  
Gps Measurements ◽  
Highway Engineering ◽  
Gps Positioning ◽  
Engineering Theory ◽  
Data Process ◽  
Data Processing Software ◽  
Gps Data Processing ◽  
Processing Software

In this paper, absorbing the domestic and foreign research results of GPS positioning technology, it is based on further GPS measurements in the highway engineering theory and methods in a systematic study of the GPS data processing process. It also introduces the high-precision GPS data processing software GAMIT. It also gives and analyzes the highway GPS data processing results from control measurements.

scholarly journals Investigation of correlation of the variations in land subsidence (detected by continuous GPS measurements) and methodological data in the surrounding areas of Lake Urmia

2012 ◽  
Vol 19 (6) ◽  
pp. 675-683 ◽  
Author(s):  
K. Moghtased-Azar ◽  
A. Mirzaei ◽  
H. R. Nankali ◽  
F. Tavakoli
Keyword(s):  
Time Series ◽  
Land Subsidence ◽  
Salt Lake ◽  
Linear Trend ◽  
Groundwater Resources ◽  
Time Interval ◽  
Gps Measurements ◽  
Lake Urmia ◽  
North West ◽  
Continuous Gps

Abstract. Lake Urmia, a salt lake in the north-west of Iran, plays a valuable role in the environment, wildlife and economy of Iran and the region, but now faces great challenges for survival. The Lake is in immediate and great danger and is rapidly going to become barren desert. As a result, the increasing demands upon groundwater resources due to expanding metropolitan and agricultural areas are a serious challenge in the surrounding regions of Lake Urmia. The continuous GPS measurements around the lake illustrate significant subsidence rate between 2005 and 2009. The objective of this study was to detect and specify the non-linear correlation of land subsidence and temperature activities in the region from 2005 to 2009. For this purpose, the cross wavelet transform (XWT) was carried out between the two types of time series, namely vertical components of GPS measurements and daily temperature time series. The significant common patterns are illustrated in the high period bands from 180–218 days band (~6–7 months) from September 2007 to February 2009. Consequently, the satellite altimetry data confirmed that the maximum rate of linear trend of water variation in the lake from 2005 to 2009, is associated with time interval from September 2007 to February 2009. This event was detected by XWT as a critical interval to be holding the strong correlation between the land subsidence phenomena and surface temperature. Eventually the analysis can be used for modeling and prediction purposes and probably stave off the damage from subsidence phenomena.

Active deformation in Algeria from continuous GPS measurements

2019 ◽  
Vol 217 (1) ◽  
pp. 572-588 ◽  
Author(s):  
Amina Bougrine ◽  
Abdel Karim Yelles-Chaouche ◽  
Eric Calais
Keyword(s):  
Gps Measurements ◽  
Active Deformation ◽  
Continuous Gps

Intelligent Clothing Embedded GPS Data Processing Based on Shifting Huffman Coding

2012 ◽  
Vol 195-196 ◽  
pp. 1116-1121
Author(s):  
Fu Xiang He ◽  
Li Hong Ren ◽  
Yong Sheng Ding
Keyword(s):  
Data Processing ◽  
Huffman Coding ◽  
Practical Significance ◽  
Gps Data ◽  
Data Processing Method ◽  
Direct Data ◽  
Gps Data Processing ◽  
Gps System ◽  
Intelligent Clothing ◽  
Non Destructive

According to the characteristic of GPS system fo intelligent garment, this paper presents a strategy of GPS data processing by removing redundant information and shifting the combination codes. Its compressed result is analyzed by comparing with direct data compression and Huffman coding. The above-mentioned strategy takes into account both the speed and the effect of the compression, and has a good performance in the compression rate. The non-destructive GPS data processing method has a positive and practical significance in the intelligent garment for efficient monitoring.

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