I have added a Bug Tracking tool to the homepage and you can follow me now on Twitter. The reported bugs and feature request as well as their status changes (e.g. fix of a bug) are tweeted, so you can easily stay up-to-date with the Seismon development.
We are currently setting up a monitoring network with UMTS telemetry support for real-time data acquisition and – processing. We do use the reliable Reftek 130 units with the Reftek RTI Software suite for online data transmission. To do the realtime data processing (e.g. event detection and – localization) we have choosen the Earthworm software and Swarm for visualizing the data processed by Earthworm. As additional tools we are using PickEwAnalysis to tune the pick_ew module and EWQuakeAlert for issuing warning emails.
In the gallery you can see some impressions from our station installation.
I started to create short Video Notes to show you how to use the various features of Seismon. I start the Video Notes series with the ODC webservice video note which shows you how to load data from the Orfeus data center into Seismon.
Please grab the latest Seismon version from the SVN repository to follow this video note.
ODC webservice part 1
ODC webservice part 2
ODC webservice part 3
Each autumn we are looking forward to preparing the seismic stations at the mass movement Gradenbach for the winter time. At Gradenbach we are running a seismic monitoring network with 7 stations, each equipped with a Reftek 130 unit.
Usually this station servicing during winter includes some nice ski-tours and this year as well Michi and I were lucky to catch some sunny days with a good amount of fresh snow in the Alps.
The last week I have been invited to Prague by the Institute of Geophysics of the Academy of Sciences of the Czech Republic. I’m in a cooperation with the group running the West Bohemian network (WEBNET) who are currently working on the adaption of Seismon to be used for processing the WEBNET data.
We have been working on some improvements of Seismon and we came up with two important changes:
Moreover a readonly access to the SVN Server holding the most recent code of Seismon is available. The get the access details you have to register to this site to gain access to the Seismon download section (follow these instructions).
I’d like to thank Jan, Jana and Josef for the good time that I had in winterly Prague and I’m looking forward to the next meeting with all of you.
Today we have encountered some problems with the miniseed toolbox and the LCC compiler that comes with Matlab. This compiler has a bug that causes strange results when working with 64bit variables. This bug caused some troubles when reading gapped data. Some parts of the data have been shifted in time!
To solve this problem, I recommend using the Microsoft Visual C++ Express compiler which can be downloaded from Microsoft free of charge. To select the appropriate compiler version suitable for your Matlab version please take a look here: http://www.mathworks.com/support/compilers/previous_releases.html.
The Microsoft Visual C++ Express can be downloaded from http://www.microsoft.com/express/Downloads/.
If you are working on Linux, you can use the GCC compiler.
Installing the Microsoft Visual C++ express compiler might cause some troubles, at least I had to fix some problems with the .Net framework installation. If you are encountering some problems you might find help reading this discussion. The cleanup tool mentioned in this discussion helped me to get rid of old .Net framework installations which solved my troubles with installing the Microsoft Visual C++ express compiler.
Any experiences with the miniseed toolbox and various compilers are welcome.
I have updated the Seismon documentation and I have added a tutorial which guides through all the basic steps to get started with Seismon. The tutorial covers the creation of the database user, the creation of a Seismon project, setting up the geometry, importing miniseed data into Seismon and visualizing the data.
You can find the tutorial in the Seismon Documentation Project (SDP) in the documentation section.
I have fixed a bug in the mexMsWriteTraces function that occured on Matlab 7.9.0(R2009b) systems using the Lcc-win32 C 2.4.1 compiler.
There was some strange behaviour with a 64bit variable. I couldn’t figure out what caused the bug, but I have found a workaround.
The bug caused multiple gaps in the created miniSeed files because the begin date of each miniseed record had a wrong microseconds value. If you have encountered the same problem, please download the new version (1.0.1) which should fix this problem.
Thilo and I have spent three days (from 13th to 15th of October) at the mass-movement Steinlehnen at Gries im Sellrain to check the seismic stations that we have deployed on the slope and to download the data collected during the summer. We have had three perfect late autumn days with foggy mornings and bright sunny noons – perfect weather to work in the mountains!
Here are some photos of the work on the slope:
A lot of things are going on at my University job at the Vienna University of Technology and besides that I’m preparing my work as a freelancer. I bet that there will be a lot of things happening that need to be shared on this blog.
My interest is related to seismology with an emphasis on weak events, free software and free hardware development…….. and creating things.
On this site you will find updates of the projects that I’m currently involved in and you can grab some software that I’m developing.
Feel free to drop some comments, any feedback is better than none.
Stefan