Time Series Database Management System (TSDSystem) of Istituto Nazionale di Geofisica e Vulcanologia (INGV, Italy): a powerful tool for the management of volcano monitoring.

Marco Antonio Aliotta (1), Mauro Amore (1), Stefano Branca (1), Flavio Cannavò (1), Carmelo Cassisi (1), Rosa Anna Corsaro (1), Marcello D'Agostino (1), Emanuela De Beni (1) , Mario Dolce (3), Cinzia Federico (2), Andrea Mastrolia (2), Salvatore Mangiagli (1), Giuseppe Messina (2), Placido Montalto (1), Antonino Fabio Pisciotta (2), Michele Prestifilippo (1), Massimo Rossi (1), Giovanni Scarpato (3), and Orazio Torrisi (1)

(1) INGV-OE, Catania, Italy, (2) INGV-PA, Palermo, Italy, (3) INGV-OV, Napoli, Italy

2 TSDSystem

The conceptual structure is divided into 5 different logical levels (Fig. 1).

The first level, called Data Source, is related to the different available data

sources. So far, the loadable data sources are ASCII files, ODBC data

sources, XML, CSV, data in ASCII format accessible from the Web, etc.

The intermediate TSDSystem level consists of three layers (from bottom

to top): 1) Loader layer are software to read data from sources and to load

them into the database and to translate any data format into the structure

used for the standardization of the data inside of TSDSystem; 2)

Database layer constitutes the logical and physical organization of data

through the use of relational databases management system (such as

MySQL) and 3) Business Logic layer collects all modules dealing with

the organization of data and responding to requests of the Applications

level (eg. from user and web applications, or visualization software).

There are two different systems for time series visualization, allowing both

the historical and real-time data visualization: (1) a win32 application

(TSViewer) for querying and visualizing time series, also designed for

monitoring purposes (or the H24 operating mode, Fig. 2); (2) a web portal

(Fig. 3) for the navigation of TSDSystem data, that offers a number of

features for displaying the joint time-series. Furthermore, spatial data

related to different dataset are managed using a GIS module for

sharing and visualization purpose.

Database

Business Logic

...ASCII File URL ODBC

Viewers Web Application

Data export User Application

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Loader 1 Loader 2 Loader 3 Loader N

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1 INTRODUCTION

One of the institutional duty of INGV is monitoring the active volcanoes of Italy. Scientific literature highlights that unrest and/or eruptive activity of a volcano are preceded by and associated with changes in the physical and chemical parameters detected through volcano monitoring. It consists in the systematic collection, analysis, and interpretation of visual observations and of instrumental measurements before, during, and after eruptive activity. Monitoring is a fundamental activity to understand and forecast potential eruptive and/or unrest scenarios in order to help the Italian Civil Protection Department (DPC) to evaluate volcano risk and plan mitigation strategies for the population. Multiparametric monitoring is the winning strategy to investigate the complex dynamics of the volcanic systems.

At INGV we developed a framework, hereinafter called TSDSystem (Time Series Database System), which allows to acquire data streams from several geophysical and geochemical permanent sensor networks (also represented by different data sources ), located on the main volcanic areas of Southern Italy, and relate them within a relational database management system.

The geodatabase is composed by 5459 polygons, each one describe by 19 string attributes and 2 geometrical.We have added all the geological information derived by the original 1:10,000 field survey maps that are not reported in the map at 1:50.000 scale. The attribute table of the polygon layer contains the description of the corresponding lithostratigraphic units of the Geological Map of Etna Volcano. The attribute table provides information about the

Map create using the Geo Explorer tool: geological map of Etna represented through different cartogrphic symbols, yellow line are the faults, from the Volcano-tectonic map of Mt. Etna volcano (Azzaro et al., 2012). The ‘identify’ button lets you view all the attributes of the clicked polygon or line.Yellow stars indicate the feature clicked.

4 SHARE DATAIn order to share data among INGV observatories, and also with Civil Protection Department, we designed a "Master View" system that, starting from the implementation of a number of instances of the TSDSystem framework (one for each observatory), makes possible the joint interrogation of data, both temporal and spatial, on instances located in different observatories, through the use of web services technology (RESTful, SOAP). Similarly, it provides metadata for equipment using standard schemas (such as FDSN StationXML). The “Master View” is also responsible for managing the data policy through a "who owns what" system, which allows you to associate viewing/download of spatial or time intervals to particular users or groups. Is noteworthy that TSDSystem is also able to provide data to different big projects such as EPOS (European Plate Observing System).

REFERECESBranca S., Coltelli M., Groppelli G., Lentini F. (2011) Geological map of Etna volcano, 1:50,000 scale. Ital. J. Geosci., 130 (3), 265-291, DOI: 10.3301/IJG.2011.15Azzaro R., Branca S., Gwinner K., Coltelli M. (2012) The volcano-tectonic map of Etna Volcano, 1:100.000 scale. Ital. J. Geosci., 131 (1), 153-170, DOI: 10.3301/IJG.2011.

3 The GEODATABASE of the Geological Map of Etna Volcano.

Starting from the GIS geodatabase used to create the geological map of Etna volcano (1:50.000), we have achieved a web-geodatabase with the aim of disseminating and updating the geological and volcanological knowledge. The GIS modules can share data using common OGC web service such as WMF, WMTS and WFS using standard schemas. The GEOBD is avaiable online (since November 2015) starting from the homepage of the INGV sezione di Catania:

www.ct.ingv.it or typing

http://geodb.ct.ingv.it/geoportale/

Figure 1: conceptual structure iof TSDSystemFigure 2: Panel at INGV Control Room Figure 3: TSDSystem user interface for data sharing and

visualization

Figure 4: main page of the volcanological GEODATABASE INGV-OE It has

two different viewer tools: MAP LAB and GEO EXPLORER.Figure 5:MAP LAB tool is the cataloguer of all the published maps: it allows

to see and download in WMS format (Web Map Service) all the files, and

the metadata dratfed following the INSPIRE directive.

Figure 6:GEO EXPLORER tool is the viewer of all the published

maps: it allows to create new maps overlaing different layer; 3D Etna

geological map represented by depositional interval.

Figure 7: Database of bulk rock composition of Mt. Etna lavas

erupted from 1995 to 2013 managed by TDS system

Session FT13B-218

lithology and the stratigraphic position of the polygon within the etnean stratigraphic succession. Moreover for the volcanic products of the last 60 ka, mapped as flow-rank, additional data such as the lithology, the distribution and morphology, the location of the vent\fissure and other additional information are available; in the age field of the attribute table the data, the techniques and the related references of the numerous radiometric datings of the volcanic succession are available. Data standardization provides the ability to perform operations, such as query and visualization, of many measures synchronizing them using a common space and time scale. Finally, the structure of TSDsystem can manage several kind of data such as chemical composition of volcanic rocks collected during an ongoing eruption (Fig. 7) and the chemical composition of volcanic fluids monitored during periodical survey. The parameters and associated metadata have organized in a hierarchical standardized architecture.

AcknowledgmentsThis work has been supported by DPC and APQ Sicilia fund