Swiss Seismological Service / Schweizerischer Erdbebendienst       ETH Zurich

Swiss Seismological Service
NO F 69.2
Sonneggstr. 5
CH-8092 Zurich
Phone: +41-44-633-2656
Secretariat: +41-44-633-2605
Fax: +41-44-633-1065
Please note: E-mails to me are scanned by a pretty strict spamfilter. By-pass the spamfilter by adding the pass-/key-word     zeugma     anywhere in the Subject-field of your e-mail - with this, your e-mail will get quickly to me, independent of its contents.

Responsibilities / Publications

- Head of the group Verification Seismology at the SED.

- Duty seismologist of the SED

- Publications / Citations (Google Scholar)

- Developper and maintainer of the following selected software products:
    * AutoDRM   - Automated Data Exchange: Publication
    * Waves4U   - Automated Data Exchange: Publication
    * RedPuma   - Alert system of the SED
    * picoFirewall   - A firewall for Linux systems
    * picoFirescan   - A firewall log analyzer
    * Salander and SalanderMaps   - Detect felt earthquakes through data mining

- Former research interests: Seismic Tomography
    * PhD Thesis (Dissertation, Doktorarbeit): Seismische Tomographie in der Schweiz mittels lokaler Erdbeben   -   Abstract/Zusammenfassung
Initial reference models in local earthquake tomography (Abstract)

- Diploma Thesis (Diplomarbeit): Magnitudenkalibrierung von Erdbebenstationen in der Schweiz

- Interviews (short selection)
  - 27.12.2013 Sargans
  - 11.04.2012 Sumatra
  - 28.3.2005 Sumatra

Lectures / Vorlesungen:       Lecturer / Dozent at ETH Zurich since 1994
- "Angewandte Informatik in der Geophysik" (WS) (1994-2006) - Further information
- "Angewandte Erdbebenseismologie" (SS) (1999-2006) - Further Information (access from ETH sites only)
- "Beobachtungsnetze (Praktikum)" (WS) (2002-2005)
- "Dynamische Erde I" (HS) (2008 - )
- "Geophysikalisches Feldpraktikum" (FS) (2009 - ) - Further Information

Encrypted E-Mails

Below you find information about my two public keys. You may use either one of them, when sending encrypted e-mails or documents to me. In order to keep privacy on the internet, encrypted and signed e-mails are preferred.
Public Key No. 1:
E-Mail: Urs.Kradolfer
Key: 1024D/BB32442F (sub: 2048g/DC10002B)
Key fingerprint = 467A 72B3 BBCF E8F4 9A8E 335D E582 EEAA BB32 442F
Public Key: on
Public Key with signatures: on
Public Key No. 2:
E-Mail: Urs
Key: 1024D/928B4C37 (sub: 2048g/DFCD7D72)
Key fingerprint = 821A EEBA 4B35 125E 15AB 5780 3EB9 D016 928B 4C37
Public Key: on
Public Key with signatures: on

You may also use any other of the public key servers (such as e.g.

Enter your key below and find out, how 'close' we are:

your key id :

- Pathfinder and statistics:

For further information, I recommend the very comprehensive web pages of Patrick Feisthammel at (English) or (in German).         There is a very short introduction for this topic I wrote some time ago.

tux For a few years I am experimenting with Linux on both our office and private PCs. While for a few years having used SuSE Linux, I have now converted to Debian Linux. See the linux page, if you are interested. tux-dance

Computer Security

Some information presented at my talk entitled "Kill or get killed - Computer security today" are given on a special computer security webpage.

Private Stuff

Some people asked me to include some private information on this web-page... Well, here is a picture of the main task of Caroline and myself (picture from May 1998). For more information, see our private pages at

Our current problems with / unsere momentanen Probleme mit Orange and / und Habbo Hotel...
Our experience and problem with the / unsere Erfahrungen und Probleme mit der Baloise / Basler Versicherung...

Home Click into this icon and return to the Swiss Seismological Service's homepage.
Last Update: 27Mar2014