107 research outputs found
Measurement of Dragging of Inertial Frames and Gravitomagnetic Field Using Laser-Ranged Satellites
No full textBy analysing the observations of the orbits of the laser-ranged satellites LAGEOS and LAGEOS II, using the program GEODYN, the authors have obtained the first direct measurement of the Lense-Thirring effect, or dragging of inertial frames and the first direct experimental evidence for the gravitomagnetic field. The accuracy of their measurement is of about 30%
Brand meanings Institutionalization in Festival Service Ecosystems: the transformation of Giffoni brand
No full textIl nuovo archivio dati sismologico integrato dell’INGV per gli esperimenti sismici temporanei
No full textNell’ambito dei Progetti Sismologici INGV-DPC - Convenzione 2007-2009 è stato progettato e realizzato il primo esempio di Archivio Dati sismologico Integrato (ADI) dell’INGV (Istituto Nazionale di Geofisica e Vulcanologia) in cui i dati in continuo delle stazioni sismiche temporanee confluiscono nell’archivio dati del sistema di acquisizione della RSN (Rete Sismica Nazionale) [Mandiello et al., 2009; Moretti et al., 2008; 2009; 2010].
Il prototipo dell’ADI è stato sviluppato nell’ambito del progetto “Messina 1908-2008” promosso dal CNT (Centro Nazionale Terremoti) e co-finanziato dal DPC (Dipartimento della Protezione Civile) in concomitanza col centenario del terribile terremoto che il 28 Dicembre del 1908 colpì lo Stretto di Messina generando un forte maremoto e causando oltre 100.000 vittime [Margheriti et al., 2008a; 2008b; Moretti et al., 2008; 2009; 2010]. Per la prima volta vi è stata la completa integrazione dei dati forniti dalle reti permanenti presenti nell’area dello Stretto (RSN; RSP - Rete Sismica Permanente della Sicilia Orientale) e dalle installazioni temporanee a terra e a mare [D’Anna et al., 2008; 2009].
L’integrazione dei dati delle stazioni temporanee nell’archivio ha mostrato la sua notevole utilità durante l’emergenza nell’area aquilana dove, a seguito del sisma del 6 Aprile 2009, sono state installate circa 30 stazioni temporanee che hanno permesso lo studio in tempo quasi-reale dell’evoluzione della sismicità dell’area [Margheriti et al., 2010].
L’immissione diretta di tutti i segnali in uno stesso sistema di gestione dati in continuo è un importante passo avanti per la loro fruibilità soprattutto durante i periodi di emergenza sismica.
L'archivio entra a far parte di un'iniziativa più ampia denominata EIDA (European Integrated Data Archive, Progetto NERIES), che rende accessibili tutti i dati sismologici a larga banda alla comunità scientifica attraverso un unico portale in formato standard. I dati, reperibili attraverso il portale EIDA, sono nel formato internazionale SEED (Standard for the Exchange of Earthquake Data) e organizzati secondo le specifiche adottate dalla RSN dell’INGV.PublishedPrato5.2. TTC - Banche dati di sismologia strumentaleope
Il nuovo archivio dati sismologico integrato dell’INGV per gli esperimenti sismici temporanei
No full textNell’ambito dei Progetti Sismologici INGV-DPC - Convenzione 2007-2009 è stato progettato e realizzato il primo esempio di Archivio Dati sismologico Integrato (ADI) dell’INGV (Istituto Nazionale di Geofisica e Vulcanologia) in cui i dati in continuo delle stazioni sismiche temporanee confluiscono nell’archivio dati del sistema di acquisizione della RSN (Rete Sismica Nazionale) [Mandiello et al., 2009; Moretti et al., 2008; 2009; 2010].
Il prototipo dell’ADI è stato sviluppato nell’ambito del progetto “Messina 1908-2008” promosso dal CNT (Centro Nazionale Terremoti) e co-finanziato dal DPC (Dipartimento della Protezione Civile) in concomitanza col centenario del terribile terremoto che il 28 Dicembre del 1908 colpì lo Stretto di Messina generando un forte maremoto e causando oltre 100.000 vittime [Margheriti et al., 2008a; 2008b; Moretti et al., 2008; 2009; 2010]. Per la prima volta vi è stata la completa integrazione dei dati forniti dalle reti permanenti presenti nell’area dello Stretto (RSN; RSP - Rete Sismica Permanente della Sicilia Orientale) e dalle installazioni temporanee a terra e a mare [D’Anna et al., 2008; 2009].
L’integrazione dei dati delle stazioni temporanee nell’archivio ha mostrato la sua notevole utilità durante l’emergenza nell’area aquilana dove, a seguito del sisma del 6 Aprile 2009, sono state installate circa 30 stazioni temporanee che hanno permesso lo studio in tempo quasi-reale dell’evoluzione della sismicità dell’area [Margheriti et al., 2010].
L’immissione diretta di tutti i segnali in uno stesso sistema di gestione dati in continuo è un importante passo avanti per la loro fruibilità soprattutto durante i periodi di emergenza sismica.
L'archivio entra a far parte di un'iniziativa più ampia denominata EIDA (European Integrated Data Archive, Progetto NERIES), che rende accessibili tutti i dati sismologici a larga banda alla comunità scientifica attraverso un unico portale in formato standard. I dati, reperibili attraverso il portale EIDA, sono nel formato internazionale SEED (Standard for the Exchange of Earthquake Data) e organizzati secondo le specifiche adottate dalla RSN dell’INGV.PublishedPrato5.2. TTC - Banche dati di sismologia strumentaleope
High performance wobbling subreflector for the MITO 2.6-m telescope
No full textThe Millimetre and Infrared Testa Grigia Observatory 2.6-m Cassegrain telescope has been designed to allow high-sensitivity observations in the millimeter spectral range. For this purpose, in order to reduce unwanted contributions from local foregrounds, we adopted a sky-chopping technique, by wobbling the telescope subreflector. We describe the design and performance of the wobbling system, which can endure external forced two and three fields square-wave modulation and includes features such as high frequency, high amplitude, high duty cycle, low microphonics, and high stability. © 1996 Optical Society of America
MedNet
No full textThe Mediterrean Network (MedNet) presently comprises 22 operating broadband seismic stations installed and maintained in cooperation with 13 geophysical institutions in Italy and in most of the countries adjacent to Mediterranean Sea. The number of stations may vary as stations are opened or sometimes closed due to different reasons like political, technical, etc., but usually temporarily. All the stations are equipped with Quanterra digitizers and Streckeisen sensors, mostly STS2 with a few STS1. Aim of the network is to contribute to monitoring of one of the most active seismic regions of the World in terms of providing high quality real-time broadband data to the seismological community. Operations started with off-line field data collection and dial-up capabilities were later added at selected sites. At present these have been replaced with more efficient TCP connections that provide for real-time data collection over the whole network. This important technological upgrade allows a prompt contribution to the seismic monitoring of Italy and of most countries bordering the Mediterranean Sea, since data are exchanged in real-time with other seismological observatories. SeedLink protocol has been adopted for transmission. As for data archiving and distribution, a fast system for retrieving data has been developed. Continuous data streams, collected both from field data tapes and from real time transfer, are stored at the MedNet Data Center and are directly available at users’ request by the standard AutoDRM and NetDC protocols (in GSE and SEED formats respectively). Station metadata and continuous waveforms are archived in a MySQL database on RAID systems and backed up on DLT tapes. Presently, fully automatic network functions include: daily monitoring of state of health; triggered retrieval of event waveforms (with magnitude- and region- specific selection criteria), local and surface wave magnitude determination, and update of web pages (http://mednet.ingv.it) for events and station information. Rapid semiautomatic moment tensor solutions are calculated by means of a modified Harvard technique, which lowers the Mw threshold down to 4.5 for regional events in those areas with proper station coverage. For smaller earthquakes in Italy a new approach to moment tensor estimation, based on higher signal frequencies, is now being developed. Preliminary tests on earthquake recordings (not only MedNet stations) from the 2002 Molise, South Italy sequence have proved very successful.SubmittedBorovetz (Bulgaria)1.1. TTC - Monitoraggio sismico del territorio nazionaleope
MedNet
No full textThe Mediterrean Network (MedNet) presently comprises 22 operating broadband seismic stations installed and maintained in cooperation with 13 geophysical institutions in Italy and in most of the countries adjacent to Mediterranean Sea. The number of stations may vary as stations are opened or sometimes closed due to different reasons like political, technical, etc., but usually temporarily. All the stations are equipped with Quanterra digitizers and Streckeisen sensors, mostly STS2 with a few STS1. Aim of the network is to contribute to monitoring of one of the most active seismic regions of the World in terms of providing high quality real-time broadband data to the seismological community. Operations started with off-line field data collection and dial-up capabilities were later added at selected sites. At present these have been replaced with more efficient TCP connections that provide for real-time data collection over the whole network. This important technological upgrade allows a prompt contribution to the seismic monitoring of Italy and of most countries bordering the Mediterranean Sea, since data are exchanged in real-time with other seismological observatories. SeedLink protocol has been adopted for transmission. As for data archiving and distribution, a fast system for retrieving data has been developed. Continuous data streams, collected both from field data tapes and from real time transfer, are stored at the MedNet Data Center and are directly available at users’ request by the standard AutoDRM and NetDC protocols (in GSE and SEED formats respectively). Station metadata and continuous waveforms are archived in a MySQL database on RAID systems and backed up on DLT tapes. Presently, fully automatic network functions include: daily monitoring of state of health; triggered retrieval of event waveforms (with magnitude- and region- specific selection criteria), local and surface wave magnitude determination, and update of web pages (http://mednet.ingv.it) for events and station information. Rapid semiautomatic moment tensor solutions are calculated by means of a modified Harvard technique, which lowers the Mw threshold down to 4.5 for regional events in those areas with proper station coverage. For smaller earthquakes in Italy a new approach to moment tensor estimation, based on higher signal frequencies, is now being developed. Preliminary tests on earthquake recordings (not only MedNet stations) from the 2002 Molise, South Italy sequence have proved very successful.SubmittedBorovetz (Bulgaria)1.1. TTC - Monitoraggio sismico del territorio nazionaleope
MITO: the 2.6-m millimetre telescope at Testa Grigia
No full textWe describe a new ground based telescope dedicated to millimetre cosmological research: MITO, Millimetre and Infrared Testagrigia Observatory. The site and all the instrumental subsystems of the telescope have been chosen to perform high sensitivity measurements for wavelengths ranging from 300 micron to 2 millimetre. The possibility of detecting fluctuations of the Cosmic Microwave Background has been explored for some observational strategies
Integrated SEED data archive for temporary seismic experiments
No full textOne of the most valuable results achieved during
the work on S5 project is the implementation of a new temporary
network data management that allows the integration in the
National Data Center together with all other seismological data produced
by INGV. This makes all data gathered during temporary experiments immediately
available from the same source and in the same data format (SEED)
increasing the availability for processing and analysis. Moreover the data are distributed
to the scientific community using the EIDA (European Integrated Data Archive
http://eida.rm.ingv.it/).
The first application has been carried out for the Messina 1908-2008 experiment
(WP2.2) http://dpc-s5.rm.ingv.it/en/Database-MessinaFault.html where has been
achieved the complete integration of permanent networks (National Seismic Network,
MedNet and Peloritani Local Network), temporary deployments (INGV-CNT and INGVCT
mobile networks) and OBS data.
All the procedures were used and further improved during the L'Aquila sequence
(Task 4) where data was available for processing together with permanent
network data as soon as it was gathered from the field giving to the
scientific community the opportunity to study the evolution of the
seismic sequence with higher density of stations (WP4.2)
( h t t p : / / d p c - s 5 . r m . i n g v . i t / e n / D a t a b a s e -
AquilaFaultSystem.html).UnpublishedSede Ispra | Via Curtatone 7, Roma1.1. TTC - Monitoraggio sismico del territorio nazionaleope
Integrated SEED data archive for temporary seismic experiments
No full textOne of the most valuable results achieved during
the work on S5 project is the implementation of a new temporary
network data management that allows the integration in the
National Data Center together with all other seismological data produced
by INGV. This makes all data gathered during temporary experiments immediately
available from the same source and in the same data format (SEED)
increasing the availability for processing and analysis. Moreover the data are distributed
to the scientific community using the EIDA (European Integrated Data Archive
http://eida.rm.ingv.it/).
The first application has been carried out for the Messina 1908-2008 experiment
(WP2.2) http://dpc-s5.rm.ingv.it/en/Database-MessinaFault.html where has been
achieved the complete integration of permanent networks (National Seismic Network,
MedNet and Peloritani Local Network), temporary deployments (INGV-CNT and INGVCT
mobile networks) and OBS data.
All the procedures were used and further improved during the L'Aquila sequence
(Task 4) where data was available for processing together with permanent
network data as soon as it was gathered from the field giving to the
scientific community the opportunity to study the evolution of the
seismic sequence with higher density of stations (WP4.2)
( h t t p : / / d p c - s 5 . r m . i n g v . i t / e n / D a t a b a s e -
AquilaFaultSystem.html).UnpublishedSede Ispra | Via Curtatone 7, Roma1.1. TTC - Monitoraggio sismico del territorio nazionaleope
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