Publication Date:
2017-04-04
Description:
A continuous global positioning system station (CGPS) provides accurate coordinate time
series, while episodic GPS stations (EGPSs), which operated throughout short measurement
sessions, are generally used to improve the monitoring spatial density. In an urban
environment, EGPSs are typically equipped with removable mounts (topographical tripod or
bipod). In this paper, a method is proposed in order to evaluate vertical surface motions by
means of differential measurements of removable mount EGPSs with respect to a nearby
reference CGPS. For each day, the correct position of this CGPS is used as reference for the
quick differential EGPS measurements to allow the correction of their positions. The method
is applied to evaluate the subsidence in the centre of Bologna, which is characterized by
significant vertical movements, probably related to seasonal climatic effects, and where these
movements differ significantly even among closely spaced locations
Description:
Published
Description:
230-240
Description:
1.8. Osservazioni di geofisica ambientale
Description:
JCR Journal
Description:
reserved
Keywords:
GPS
;
episodic GPS
;
subsidence
;
seasonal variations
;
04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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