A Spatial Data Infrastructure for Landslides and Floods in Italy

Transcription

1 V Convegno Nazionale del Gruppo GIT Grottaminarda giugno 2010 A Spatial Data Infrastructure for Landslides and Floods in Italy Ivan Marchesini, Vinicio Balducci, Gabriele Tonelli, Mauro Rossi, Fausto Guzzetti CNR IRPI, Perugia, Italy V Convegno Nazionale del Gruppo GIT Grottaminarda giugno /31

2 SYNOPSIS Introduction Open Source Approach IRPI Spatial Data Infrastructure Data and services Example of use of services Improvements 2/31

3 INTRODUCTION The INSPIRE European Directive 2007/2/EC entered into force 15 May A driving force towards standardization of geographical information and services is the Open Geospatial Consortium (OGC). (OGC) In 2009, the Earth and Environment Department of the Italian National Research Council (CNR) launched the GIIDA project. project GIIDA is an Italian acronym for Integrated and Interoperable Management of Environmental Data. 3/31

4 THE OPEN SOURCE APPROACH Typically, in a SDI a large number of software and hardware components results in large implementation and management costs. Most frequently, Open Source Software (OSS) ensures good cost/quality ratio, enhanced interoperability, and improved adoption of existing standards. 4/31

5 THE OPEN SOURCE APPROACH The Open Source GEOspatial (OSGEO) Foundation supports, builds, and distributes open source geospatial software of high quality. FOSS4G software is widely adopted by regional, national, and international organizations (see e.g. Ticheler, 2009) OSS allows for copying, modifying, and distributing the software. OSS is more flexible (has less limitations) than proprietary software. CNR IRPI decided to implement the SDI using Open Source Software 5/31

6 IRPI SPATIAL DATA INFRASTRUCTURE Data entry Data management Data storage External OWS services Data service Client interfaces WMS (cascading) WebMap WMS WFS CSW 6/31

7 IRPI SPATIAL DATA INFRASTRUCTURE Data entry Data management Data storage Data service Client interfaces External OWS services Interoperability 7/31

8 IRPI SPATIAL DATA INFRASTRUCTURE Software used to implement the CNR IRPI Spatial Data Infrastructure includes: PostgreSQL 8.2 e PostGIS 1.3.5, Geoserver Geonetwork OS 2.4 ExtJS 3.0 GeoExt 0.6 OpenLayers 2.9, UNM MapServer GeoSDI ERA 0.1 The SDI is hosted on servers running RedHat Fedora Core 8 8/31

9 IRPI SPATIAL DATA INFRASTRUCTURE Static layers include: hydrological and geographical boundaries, geological and geomorphological maps, landslide and flood inventory maps, landslide susceptibility maps, landslide hazard maps, landslide risk maps, for different areas in Italy, and at different scales. 9/31

10 IRPI SPATIAL DATA INFRASTRUCTURE Dynamic layers are produced both by automatic procedures that update the maps daily... 10/31

11 IRPI SPATIAL DATA INFRASTRUCTURE... and by operators who manually update the PostGis DB by means of GIS and DB clients. 11/31

12 IRPI SPATIAL DATA INFRASTRUCTURE PostgreSQL, an enterprise class DBMS, is used to store the thematic and geographical information by means of its geospatial extension PostGIS. With PostGIS, the geographical information can be managed and updated easily, including through automatic scheduled procedures. Currently, one of the IRPI PostgreSQL databases manages tables: Containing records in a single table, and accepting the insert of around records each day for measured rain, and records each day for forecasted rainfall. The procedure managing all the data is shared between servers, the data are redundant, and backups are performed regularly. 12/31

13 IRPI SPATIAL DATA INFRASTRUCTURE WMS, WFS, and WCS services are implemented using Geoserver, a Java server that allows users to share and edit geospatial data using a graphical front end. Styling of the individual data layers is obtained exploiting the GeoExt Styler extension, which creates OGC Styled Layer Descriptor (SLD) files. Geonetwork is used to compile and manage metadata, and to provide a service (CSW) for discovering maps and documents. It allows management of different users and authorization levels for the compilation of metadata. The CNR IRPI catalog produced by Geonetwork contains metadata compiled manually according to ISO19115/39 standards, and metadata harvested automatically from the Geoserver services. 13/31

14 IRPI SPATIAL DATA INFRASTRUCTURE The CNR IRPI catalogue created using GeoNetwork Open Source. 14/31

15 IRPI SPATIAL DATA INFRASTRUCTURE ExtJS and GeoExt/OpenLayers are a set of JavaScript libraries for building rich Web mapping applications. ExtJS and GeoExt/OpenLayers are used to design the Web GIS interface adopted to disseminate the geospatial information. The rationale behind the GeoExt library is the creation of objects from OpenLayers maps, which can be managed using ExtJS for the implementation of the Web interfaces. Since OpenLayers maps can be created from the same OGC services provided by Geoserver, the implementation of the WebGIS is largely the result of the underlying geospatial infrastructure. 15/31

16 IRPI SPATIAL DATA INFRASTRUCTURE Beta Version of the WebGis interface developed for dissemination of all IRPI geospatial data and sample code. 16/31

17 DATA AND SERVICES WMS services are provided using the commonly adopted reference systems in Italy, including: WGS84 (EPSG: 4326), UTM ED50 (EPSG: 23032, EPSG: 23033), UTM WGS84 (EPSG: 32632, EPSG: 32633), Gauss Boaga Roma40 (EPSG: 3003, EPSG: 3004), and Google Spherical Mercator (EPSG: ). OGC Services OGC service-level security Type URL Metadata WMS WFS GetFeature WCS GetCoverage WebGis Services WebMap (beta version not completely stable) Services and URLs provided by the CNR IRPI Spatial Data Infrastructure. 17/31

18 EXAMPLE OF USE How to take advantage of this services? Citizens can simply explore the WebGis service discovering informations and maps. 18/31

19 EXAMPLE OF USE 19/31

20 EXAMPLE OF USE How to take advantage of this services? Citizens can simply explore the WebGis service discovering informations and maps. Engineers and Geologists can use the WMS services to check if one area was interested by floods or is susceptible to landslides. 20/31

21 EXAMPLE OF USE 21/31

22 EXAMPLE OF USE How to take advantage of this services? Citizens can simply explore the WebGis service discovering informations and maps. Engineers and Geologists can use the WMS services to check if one area was interested by floods or is susceptible to landslides. Researchers can use the WFS and WCS to get data. Including the possibility to save a copy of the data and manipulate them 22/31

23 EXAMPLE OF USE 23/31

24 EXAMPLE OF USE How to take advantage of this services? Citizens can simply explore the WebGis service discovering informations and maps. Engineers and Geologists can use the WMS services to check if one area was interested by floods or is susceptible to landslides. Researchers can use the WFS to catch vector data. Including the possibility to save a copy of the data and manipulate them Italian Department of Civil Protection can integrate data from the National landslide Warning System with maps of landslides susceptibility or maps of historical catalogues. 24/31

25 EXAMPLE OF USE 25/31

26 EXAMPLE OF USE 26/31

27 EXAMPLE OF USE 27/31

28 IMPROVEMENTS Virtualization Hardware: Server hp Proliant DL360 G5 2 HDD 60GB RAID1 25 GB RAM 2 Intel Xeon QuadCore L GHz Connected to a SAN Infortrend with protocol ISCSI (2 partitions 700 GB e 500 GB) Platform for virtualization: ESXi 4.0 update1 Operating Systems: 13 Virtual machines with Ubuntu server bit 28/31

29 IMPROVEMENTS 1 load balancer 1 GeoServer Admin + GeoBatch 6 nodes Geoserver 1 Pooler PostgreSQL 2 nodi PostgreSQL + PostGIS 1 nodo GeoNetwork 1 Nodo GeoSDI ERA Service requests Service responses Load Balancer Active OWS Servers OWS Management Server Passive OWS Server Raster data Storage PostgreSQL Pooler Vector data PostGIS nodes 29/31

30 CONCLUSIONS CONCLUSIONS An Open Source Approach was used to implement the IRPI SDI WMS, WFS, WCS and CSW services are now available for a large number of maps concerning landslides and floods The same data are shared by means of a WebGis interface The infrastructure is developed to be INSPIRE compliant 30/31

31 V Convegno Nazionale del Gruppo GIT Grottaminarda giugno thank you. 31/31

32 IRPI SPATIAL DATA INFRASTRUCTURE Structure of one of the databases managed by PostgreSQL 32/31