Updates

Updates to Short-term Response Analysis

There have been a number of recent updates to the Short-term Response Analysis app. These include: Chart for determining re-entry using different parameters: This chart gives you values for a particular parameter over time (based on a user-defined time window size and step). A threshold value for that parameter can be set, allowing you to see when the seismic data drops below that threshold. The parameter investigated can currently be set to energy, event count, hazard, background ratio and activity rate probability. For more information about these parameters, see Tierney et al. 2019.   Frequency–magnitude and log energy–log moment charts for response events: This allows you to do more detailed analysis of responses, to try to understand the underlying mechanism of the response and the distribution of events.  Time versus distance to trigger chart: This allows you to investigate whether there are trends in your response seismicity dependent on the distance from the trigger.  Trigger distributions chart: This is for allowing you to analyse the distribution of selected triggers, to help you make better decisions as to what criteria to use for re-entry and at what level that criteria should be set    Charts for analysing cumulative distributions of parameters: This is for allowing you to see the full distribution of seismic event parameters for a trigger (or multiple selected triggers). The parameter investigated can currently be set to cumulative number of events, cumulative moment, cumulative apparent volume, activity rate, energy index, apparent stress frequency and b-value.   If you need a root upgrade to see these charts or have any questions on their use, please contact the support email address for help.

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Marker Style Updates

The upgrade to mXrap version 5.16 introduced a variety of changes and improvements to marker styles. The changes can be separated into general updates which are relevant to all users and developer updates which are relevant to app developers who create and customise marker styles. General Updates: For general users the focus was on making it easier to quickly customise a series marker styles on the fly. In addition to this we have added support for displaying categorical legends. Marker Style Overrides from series control panel Users can now quickly change the lightness and transparency of a series Users can now quickly change the colour and image of a single-point marker Users can now quickly change the colour of a survey series Added support for categorical legends Developer Updates: For developers we have added a variety of new tools and features to make it faster and easier to make relevant marker styles with improved perceptual contrast. Improved thresholds and ranges Threshold values for colour changes can now be specified as a percentage of the range between the minimum and maximum values, allowing colour schemes to be defined more generically Added ability to define diverging spectrums around a chosen mid-point Added support for using IDs as marker colour inputs Added ability to specify a start and end transparency for marker style ranges Improved colour spaces and spectrums Added support for interpolation through a variety of new colour spaces including CIELAB and CIELCH New colour scheme presets with well designed colour ramps for specific kinds of data such as cyclic or diverging Added test image for evaluating how perceptible data variations are as well as simulating colour vision deficiencies For more information on colour schemes please refer to the following resources: Peter Kovesi. Good Colour Maps: How to Design Them. arXiv:1509.03700 [cs.GR] 2015 Paul Tol’s Notes For more information of if you would like to upgrade to the latest version of mXrap please contact our support email address. ACG News: Welcome to the Team! At the beginning of February Audrey Goulet joined the ACG as a research fellow while finishing her PhD degree in mining engineering at Université Laval (Quebec, Canada). Audrey is a part of the mXrap team and is going to be working on the application of probabilistic ground support design tools which is a subproject of the third phase of Ground Support Systems Optimisation (GSSO3). She will be focusing on improving automation of data input in the RMDA application and the DFN calibration processes. Course Reminder The Managing Seismic Risk in Underground Metalliferous Mines Course will be held 13-16 March 2023, in Perth, Western Australia and streamed online. View the course program, learn more about the event and register your attendance at acg.uwa.edu.au/events.

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