Seismic database Network Access Point Seismic database Network Access Point

Paolo Diviacco

Istituto Nazionale di Oceanografia e di Geofisica Sperimentale

pdiviacco@.ogs.trieste.it

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 ::