7 research outputs found
A GeoNode-based platform for an effective exploitation of advanced DInSAR measurements
This work presents the development of an efficient tool for managing, visualizing, analysing, and integrating with other data sources, the deformation time-series obtained by applying the advanced differential interferometric synthetic aperture radar (DInSAR) techniques. To implement such a tool we extend the functionalities of GeoNode, which is a web-based platform providing an open source framework based on the Open Geospatial Consortium (OGC) standards, that allows development of Geospatial Information Systems (GIS) and Spatial Data Infrastructures (SDI). In particular, our efforts have been dedicated to enable the GeoNode platform to effectively analyze and visualize the spatio/temporal characteristics of the DInSAR deformation time-series and their related products. Moreover, the implemented multi-thread based new functionalities allow us to efficiently upload and update large data volumes of the available DInSAR results into a dedicated geodatabase. The examples we present, based on Sentinel-1 DInSAR results relevant to Italy, demonstrate the effectiveness of the extended version of the GeoNode platform
Remote sensing contributing to assess earthquake risk: from a literature review towards a roadmap
Remote sensing data and methods are widely deployed in order to contribute to
the assessment of numerous components of earthquake risk. While for earthquake hazardrelated
investigations, the use of remotely sensed data is an established methodological
element with a long research tradition, earthquake vulnerability–centred assessments
incorporating remote sensing data are increasing primarily in recent years. This goes along
with a changing perspective of the scientific community which considers the assessment of
vulnerability and its constituent elements as a pivotal part of a comprehensive risk analysis.
Thereby, the availability of new sensors systems enables an appreciable share of remote
sensing first. In this manner, a survey of the interdisciplinary conceptual literature dealing
with the scientific perception of risk, hazard and vulnerability reveals the demand for a
comprehensive description of earthquake hazards as well as an assessment of the present
and future conditions of the elements exposed. A review of earthquake-related remote
sensing literature, realized both in a qualitative and quantitative manner, shows the already
existing and published manifold capabilities of remote sensing contributing to assess
earthquake risk. These include earthquake hazard-related analysis such as detection and
measurement of lineaments and surface deformations in pre- and post-event applications.
Furthermore, pre-event seismic vulnerability–centred assessment of the built and natural
environment and damage assessments for post-event applications are presented. Based on
the review and the discussion of scientific trends and current research projects, first steps
towards a roadmap for remote sensing are drawn, explicitly taking scientific, technical,
multi- and transdisciplinary as well as political perspectives into account, which is
intended to open possible future research activities