Transcript Advanced Data Management in Igneous Geochemistry

earthchem
Integrating Data Management for Igneous Geochemistry
PetDB
NAVDAT
GEOROC
K.Lehnert, GSA Seattle Nov 4, 2003
GEOROC
• Oceanic Islands
• Convergent Margins
• Large Igneous Provinces
A.W. Hofmann
B. Sarbas
U. Nohl
K.Lehnert, GSA Seattle Nov 4, 2003
NAVDAT
• Cenozoic igneous rocks from
Western North America
J.D. Walker
R.A. Black
A.F. Glazner
G.L. Farmer
R.W. Carlson
J.N. Grossman
L. Ferrari
K.Lehnert, GSA Seattle Nov 4, 2003
PetDB
• Oceanic Crust Generated at Mid-Ocean Ridges (incl.
BAB, Seamounts, Old Oceanic Crust)
K. Lehnert
C.H. Langmuir
W.C. Lenhardt
S. Vinayagamoorthy
K.Lehnert, GSA Seattle Nov 4, 2003
Common Objective
Create a research tool that maximizes
application of the geochemical data set.
 Archive data
 Serve data
 Facilitate data analysis
K.Lehnert, GSA Seattle Nov 4, 2003
Achievements
Data Compilation for >170,000 samples
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PETDB
NAVDAT
GEOROC
K.Lehnert, GSA Seattle Nov 4, 2003
Achievements
Data Model for Rock Geochemistry
• Accommodates all
essential metadata
(LEHNERT et al. 2000)
Compatibility
• Generally applicable for
sample-based petrological
and chemical data for
rocks
• All 3 databases use the
same schema
K.Lehnert, GSA Seattle Nov 4, 2003
Achievements
Dynamic interactive web-based
user interfaces
K.Lehnert, GSA Seattle Nov 4, 2003
GEOROC
Precompiled data sets
K.Lehnert, GSA Seattle Nov 4, 2003
NAVDAT
Visualization
Migration of
Volcanism in the
Western US over
the last 65 My
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Sample localities are plotted
at the sample age and stay
"lit" for +/-200,000yr around
the nominal sample age
• High-silica rocks
• Andesites
• Basalts
K.Lehnert, GSA Seattle Nov 4, 2003
PetDB
Integration of Distributed Data
Required:
Unique Sample
Identification
K.Lehnert, GSA Seattle Nov 4, 2003
A Growing User Community
Number of Different Users per Month
4000
GEOROC
3500
Unique Users
per month
3000
2500
2000
1500
1000
PetDB
500
0
09/03
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Month
K.Lehnert, GSA Seattle Nov 4, 2003
Utility of Geochemical Databases
• Databases permit desktop access to the
entire published literature in minutes
• Allow daily questions to be addressed that
would otherwise be dropped
“…Within about 5 minutes of logging on for the first time, I
was staring at an EXCEL file that had all the REE on basalt
glasses from the EPR from 10N to 20S. And the answer
to my La/Sm question.
I am very impressed, we are looking at the future of
geochemistry.”
K.Lehnert, GSA Seattle Nov 4, 2003
Utility of Geochemical Databases
• Facilitate evaluation of data
comparison of data
from different analytical
techniques or labs
K.Lehnert, GSA Seattle Nov 4, 2003
Utility of Geochemical Databases
• Permit efficient design of research
programs, in the lab and field/at sea
“Catherine Chauvel and Janne Blichert-Toft contacted me recently about a
sample with the fairly useless name AD3-3 that I analyzed so long ago I can't
remember. They wanted to reanalyze the Hf isotopes, because they are very
high. Having spent several hours looking for the sample without success, I
then decided to check the database to see who else might have it (I knew it
was a well circulated sample). Turns out the list of people who have analyzed
this sample reads like a who's who in isotope geochemistry. Most recently,
Vincent Salters analyzed it, who confirmed Patchett's high Hf ratio.
Bottom line is this saves Catherine and Janne from having to
reanalyze it. In that sense, the database seems to be fulfilling one of its
goals.”
K.Lehnert, GSA Seattle Nov 4, 2003
Common Challenges
• Update and maintain content
• Improve functionality of
interfaces
• Improve database capabilities
and interoperability
• Ensure long-term stability of
projects
K.Lehnert, GSA Seattle Nov 4, 2003
earthchem: Objectives
• Create an Integrated Information
System for Igneous Geochemistry
• Take advantage of the synergies
among the individual projects
K.Lehnert, GSA Seattle Nov 4, 2003
Benefits for the Community
• Easier access to the data
• Common standards
• Generally applicable tools
• Improved systems
K.Lehnert, GSA Seattle Nov 4, 2003
earthchem: Foci
• Data Entry: Make population of
databases more efficient
• Interfaces: Optimize interaction with
data for users at all levels of
expertise
• Interoperability: Ensure that users
can retrieve and integrate data from
distributed sources
K.Lehnert, GSA Seattle Nov 4, 2003
earthchem: Action Items
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Standards for metadata and data reporting
Unique Sample Identification
Develop map Interfaces
Develop visualization tools for data selection
Integrate tools for data analysis
Implement standards for data encoding and
exchange (XML, OAI, OGC, etc.)
• Define common vocabularies
K.Lehnert, GSA Seattle Nov 4, 2003
The Culture Change
Development and implementation of a
“Cyberinfrastructure for Solid Earth
Geochemistry” requires a change in
the investigators’ mindset.
“This is community’s data for which I
am responsible.”
K.Lehnert, GSA Seattle Nov 4, 2003