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Seismic database Network Access Point Seismic database Network Access Point
Paolo Diviacco
Istituto Nazionale di Oceanografia e di Geofisica Sperimentale
Peculiarities of this data type, that do not fit the current paradigms
•File size•Sensitivity•Divergence from the GIS conceptual framework
network traffic visualization
Commercial systems exist but have several side effects from a Scientific Research point of view
1. Very expensive2. Prescriptive3. Complex data structure4. Need professional data
manager5. Proprietary standards and
codes (cannot be distributed)
Seismic Data: - remains within the server- processed within server- sends to the client only jpg, png, gif
Positioning: - sent to the client (SVG)- Rendered by the client
Mixed Server side-client side paradigm (Data access control)
Based on opensource software only (PHP, Apache…)
SVG (Scalable Vector Graphycs)
XML dialect that handles vectorial images (W3C standard == open-source)
•objects remain objects (a road is not just some pixels in a bitmap) •objects can have “attributes” (like a name or a web link)•Objects can have “methods” (if I hover on an object something happens: e.g. the object’s name pops up somewhere)•Maps can be Interactive•Zoom without pixellation•Pan
Vectorial:
Rendered in your PC:Light-speed zoom, pan and web link
Metadata Metadata + Data Metadata + Interact with Data
•Ease•Data quality•Serendipity!
Advantages:•Protect intellectual property•Version Control•Smart Server-side caching system •Reduces network traffic•Resource consolidation •Easy maintenance
Initiatives based on SNAP
http://snap.ogs.trieste.it/SDLS
http://snap.ogs.trieste.it/GDLDB
http://snap.ogs.trieste.it/OA
http://snap.ogs.trieste.it/ECORD
http://www.co2geonet.com/
… we are looking for new partners ::
MetaSNAPMetaSNAP
SNAP Network Aggregator
Data Discovery PortalWeb based Seismic data ArchiveComputer Supported
Collaborative Work (CSCW) toolkit
1.Problematization: conceiving the issue2.Interessement: find people interested 3.Enrolment: create a “friendly” network 4.Mobilisation of allies: active support
Latour & Callon (1986)
Negotiation = messaging
Reference = Linking
Test = experiments = data
User B
User C
User D
User ASERVER
Processing
DATA
Server side• No file size limit• No duplicazione dati• File naming univoco per tutti• Tutti possono accedere a tutte le info• Version control• Data Mining, Seach keyword..• Organizzazione in task
Computer Supported Collaborative Work (CSCW) toolkit
= Tool to handle negotiation
What is a Data Discovery Portal (DDP)::
It is a tool to find information in a distributed system
In our view it is a tool to foster collaborative attitude getting together data owner and seeker
Problematisation: define the problemInteressement: find people interestedEnrolment: enrole themMobilisation of allies: ask for active support
DDP Mutual benefit Data access control
MetaSNAPMetaSNAP
SNAP Network Aggregator
MetaSNAPMetaSNAP
SNAP Network Aggregator
INTERNET
•Metadata•Snapshots of seismic data•Navigation
MetaSNAPMetaSNAP
SNAP Network Aggregator
INTERNET
Remote nodes continue tolive independently
Users are enroled by remote node data administrator
MetaSNAPMetaSNAP
SNAP Network Aggregator
Data Discovery Portal
Computer Supported Collaborative Work (CSCW) toolkit
Web based Seismic data Archive
The whole picture ::