GFZ Representative Report

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CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010


GFZ Representative Report

Bernd Ritschel, GFZ
ISDC* Manager

rit@gfz
-
potsdam.de


The Electronic

Geophysical Year

*Information System
and

Data Center

CHAMP Satellite Project


Partners: GFZ, DLR, NASA, CNES


Lifetime: 04/2000


09/2010


Main objectives:


Global Earth
gravity field
(models)


Global Earth
magnetic field
(models)


Atmospheric/
Ionospheric

sounding

(GPS
occultations
)


Monitoring surface heights (GPS altimetry experiment)





CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Double difference geometry of GPS

limb sounding with CHAMP

Combination Gravity Field Model

EIGEN
-
CG01C (CHAMP
-
GRACE
-
TERR.)

Magnitude of non
-
dipolar field

GRACE Satellite Project


Partners: GFZ, DLR, NASA,





CSR


Lifetime: 03/2004


2014


Main objectives:


Global Earth
gravity field

(constant/time variable)


Occultation atmosphere/

ionosphere


Deep ocean

current

changes




CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

GRACE Gravity Field Model

Earth mass distributions

TerraSAR
-
X Satellite Project


Partners: GFZ, DLR, Industry


Lifetime: 07/2007


2012


Main objective:


X
-
band radar based SAR

(Synthetic Aperture Radar)

interferometry

images





CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Source: ESA

TerraSAR
-
x
StripMap

product, 30 x 55
kilometres
, as an
example of EEC
projection.

It shows the
Upsala

Glacier in Patagonia.

The three SAR (Synthetic Aperture Radar) modes:

Spotlight,
Stripmap

and
ScanSAR
.

Tandem
-
X Satellite Project


Partners: GFZ, DLR, Industry


Lifetime: 06/2010


2015


Main objectives


X
-
band radar based SAR

(Synthetic Aperture Radar)

interferometry

images


Digital Earth elevation model

(high accurate 12 x 12 x 2m)


Velocity measurements





CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

This elevation model shows different accuracies:

1
kilometre
, 90
metres
, 30
metres

and 12
metres

(
TanDEM
-
X).

Source: ESA

TanDEM
-
X
and

TerraSAR
-
X in
formation

flight

SWARM Satellit Project


Partners: GFZ, ESA, DLR


Status: Phase D


Lifetime: 2012


2016


Main objectives:


Global Earth
magnetic field
(model)


3D Earth crust conductivity


Electric currents in ionosphere





CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Dynamics of the Earth generating

t
he Gravity and Magnetic Field

Swarm constellation of three satellites

The Earth's magnetic field

is mainly produced by a

self
-
sustaining dynamo

in the fluid outer
-
core

MicroGEM

Satellite

Project


Partner: GFZ, TU Berlin, Industry


Status: Phase A


Lifetime: ?


Main objectives:


Occultation atmosphere/ionosphere
([Space] Weather)


Topside ionosphere tomography


Reflectometry

ocean/ice

with GALILEO/GPS


POD with VLBI (for the first time)

SLR and GNSS




CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Planned Satellite Projects


GRACE “Filler” Mission


Partners: DLR
,
GFZ, ...


Status: Phase 0


Lifetime: 2015


2020


Main Objective: Gravity field monitoring



GRACE Follow
-
on


Partners: NASE, CSR Texas,

GFZ


Status: Concept


Lifetime: 2020




Main Objective: Gravity field/water storage monitoring





CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Global Geodetic Project (GGP)

IAG Inter
-
Commission Project IC
-
P3.1


Joint with Commission 2
-

The Gravity Field
, &

Commission 3
-

Earth Rotation and Geodynamics

Research areas:



Gravity field variations



Environmental influences



local/global Hydrology

GGP SG* Station Network

*
Superconducting

Gravimeter



30 SG stations around the globe



Basis for WDCC for Earth Tides

The 2007 International Geohazards Week, Frascati, Italy, 5
-
9 November 2007

GFZ ISDC* Portal Homepage:

http://isdc.gfz
-
potsdam.de

*Information System
and

Data Center

GGP Superconducting Gravimeter Station Network

ISDC Data and Users


289
product

types

from

different
geoscience

domains


113 product types for public use


4 product types with

grants for science teams


180 internal product types



14,38 Terra Byte of data


23,65 Million products


5.000 files/day data flow



< 2390 national and international users and


user groups


19 data provider

(scientific groups)
GFZ+Unis+JPL+UCAR


CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Georesearch

Challenges and Semantic Relations

1
http://www.emc.com/collateral/analyst
-
reports/diverse
-
exploding
-
digital
-
universe.pdf

2
http://www.geosc.psu.edu/~dbice/DaveSTELLA/climate/climate%20system.png

2

Culture of scientific work

Complex Systems

exponential

growing volume


of data and information

Research object

producing

1

Technical driven

concepts & metadata

Science domain

related concepts

Workflows & vocabularies

Semantic relations

Semantic relations

Geoscience

Objectives

and Semantic Web Idea


Modeling the world of
geoscience

knowledge generation



Integration of multi
-
domain data and information for the
research of complex geo
-
systems


Discovery, retrieval, reuse and share of data, information
and knowledge


Combining and aligning of data and information using
controlled vocabularies and inference based rules


Putting the content of data and information in to the
appropriate inner and outer context, incl. literature (DOI)


Integration of user generated context information and
knowledge using Web 2.0 technology


Visualization of knowledge concepts and semantic relations



Requirements for Modeling and

Detecting of Semantic Coherence


Describe the content and context of data in the right
way => (standardized)
metadata


Design the metadata in the right structure => concept
map/RDF
-
triples/
ontology model


Find/use the right terms for addressing the properties
of data/metadata =>
controlled vocabulary


Open/adopt the ontology for the chance of data and
metadata interoperability =>
merging/alignment of
domain
-
centered
ontologies



Visualization of Semantic Relations


Tool for modeling and representation of concepts/
ontolgies


Detect entities and features


Find relations between entities


Estimate properties of relations


Support for interactive retrieval applications


User guidance => navigation and exploration


Interactive presentation of content and context related
features and relations


Tool for representation of retrieval/reasoning results
(knowledge)


Presentation of highly complex correlations


Reduction of information overload


Supply of visual links to related extended information


DIF Metadata Classes


Data
Product Type
= „Parent DIF Document“, Version 9.x


=> FGDC/OGC/ISO 19115 compliant
(incomplete)


Instrument

(Sensor) = Instrument DIF


=> OGC SWE


Platform

(Source) = Platform DIF


=> OGC SWE


Project

(Campaign, Mission) = Project DIF


Data Center
= Data Center DIF






Institution*

*in addition to GCMD

c

ISDC Ontology Class Model

Project

Platform

Instrument

Science Domain

Product Type

Controlled Vocabulary*

Free Vocabulary

*
http://gcmd.gsfc.nasa.gov/Resources/valids/archives/keyword_list.html

Institution

ISDC Concept Map

Metadata Class Ontology

*Concept Map

http://de.eyeplorer.com/show/me/climate

eyePlorer

Concept


Central concept


Search term(s)


Associates



eyeSpots


Associate Ranking


Diameter of
eyeSpots


Relations



Lines between
eyeSpots


Categories (Domain)

Coloured

circle segments



Facts (from CMS)

Text, Pictures, …







Sources



Repository Selection



Primary results

Secondary results

eyePlorer Architecture for Primary Results

Picture taken from VIONTO presentation

eyePlorer Architecture for Secundary Results


(Facts)

Picture taken from VIONTO presentation

ISDC/
eyePlorer

Categories

Relationships


ISDC/
eyePlorer
[Wiki]

Definition

Relationships


ISDC/
eyePlorer
[Wiki]

Keywords

and
Relations

Relationships


ISDC
eyePlorer

mock
-
up: Climate

Conclusions and Further Tasks


Visualization of ontologies is a suitable approach for
knowledge representation and management


We have a preliminary ISDC ontology model


There are detailed ideas/use cases for semantic
-

based
ISDC retrieval application similar to eyePlorer



Finishing the ISDC ontology modelling process


Finding/filling the semantic gaps, both features/ properties
and appropriate values


Ontology alignment/merching (very difficult cognitive task),
e.g. DC, FOAF, SWEET, …


Transforming XML metadata files and rules into OWL and
SWRL files according to the ontology model


CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Challenges

(
from

WGISS 24)


Sustainable funding

of human, technology and
technical resources for operational data and
information services


Developing/Using of
a philosophy
for sustainable
data and information management at the GFZ


Providing a high available

(long
-
term)
archive

and
services
for data, information and knowledge


Education campaign

for scientists related to ESSI
1


ESSI
1

must become
important

research domain

within German
geoscience

work
, like in many EU
countries, Japan and U.S.

1
Earth and Space Science Informatics

Einsteinturm (1921)

Thank you, Questions?


CEOS Working Group on Information Systems and Services, WGISS
-
24, Oberpfaffenhofen, Oct. 15
-

19, 2007

CEOS Working Group on Information Systems and Services, WGISS
-
24, Oberpfaffenhofen, Oct. 15
-

19, 2007

http://www.gitews.org

Semantic
-
based

Use Cases for GGP

-

Fuzzy Logic is Focus of Use Cases
-


Show all SG stations which are in operation and delivering
calibrated gravity data and additional
trustful environmental
data

in a certain time and space frame


Give all earthquake SG data for stations which also have
collocated or nearby located
permanent GPS observations


Show all
geoscientific

projects which use GGP data and
information for the validation of global gravity field models
as well as
other global geophysical models


Connect GGP gravity data with
relevant and free available
Web information

(Web pages, literature, catalogs …)


Network and visualize
user generated context
(tagging,
blogs,
mashups
, social navigation data) with GGP data



Usage and Benefit


of Semantic Relations


Integration of different domain
-
related data and information to
answer domain
-
specific questions


Re
-
usage and combination of (tailored) domain
-
specific data
and information for inter
-
domain complex questions


Considering and benefit from different cultures and workflows
of research approaches


Connection of data and related science publications


Combination of knowledge of data providers (concept and
controlled vocabularies) and data users (
folksonomies
)


Bridge from hardcore science results to open societal
knowledge

CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

ISDC and GFZ


ISDC is even smaller group now
, only 2 persons with
support from System and DB administrator


New head of the Geodesy and Remote Sensing

department (coming from university)


New director of the GFZ

(coming from a technical
university)


Interested in more transparency


Common data policy within the GFZ


New mechanism for funding of IT infrastructure


Improvement of long
-
term archive facilities




but new requirements are coming from everybody


MicroGEM (Phase A)

Initial scientific satellite based

use of Galileo for

Earth observation

POD:GNSS

Topside

Ionosphere

Tomograhy

Occultation

Atmosphere/Ionosphere

Reflectometry

Ocean/Ice

with Galileo

with GPS

POD: VLBI

POD: SLR

Combination

with ground GNSS

CEOS Working Group on Information Systems and Services, WGISS
-
29, Bonn, May 17
-

21, 2010

Projects related to WGISS


remote


CHAMP (multi
-
domain mission)


GRACE (multi
-
domain mission)


GPS
-
PDR (geodesy)


GASP (GPS) (atmosphere/ionosphere)


TerraSAR
-
X (multi
-
domain mission)


GGSP (Galileo?)



in
-
situ


GGP (gravity data)