Changes for page AusPass Data
Last modified by robert on 2025/08/21 13:37
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... ... @@ -46,14 +46,14 @@ 46 46 47 47 Soon we will also begin hosting regionally specific catalogs with full phase picks. 48 48 49 -= SmartSolo Node Z Polarity bug (IGU-16HR only)=49 += SmartSolo Node Z Polarity bug = 50 50 51 -In [[late 2023 it was discovered>>https://epic.earthscope.org/content/smartsolo-archives-flipped-polarity-igu-16hr-3c-5hz]]that the vertical Z channel of **theIGU-16HR short period**SmartSolo nodes is actually inverted relative to the standard expectation of "positive up" (vertical axis dip = -90). EarthScope's solution was to add a -1 multiplier to the //response data.// Because we have a much smaller volume of this data to fix, and far less of it already distributed prior to this announcement, we have opted to do the opposite; e.g. we invert the //raw data// because the data is what is wrong; not the response.51 +In late 2023 it was discovered that the vertical Z channel of **all **SmartSolo nodes is actually inverted relative to the standard expectation of "positive up" (vertical axis dip = -90). EarthScope's solution was to add a -1 multiplier to the //response data.// Because we have a much smaller volume of this data to fix, and far less of it already distributed prior to this announcement, we have opted to do the opposite; e.g. we invert the //raw data// because the data is what is wrong; not the response. 52 52 53 - **Until very recently we alsothought that the BD3C-5 "broadband" nodeshad inverted data by default, but now understand that their raw exported data has thecorrect polarity.**53 +As such, 54 54 55 55 {{warning}} 56 -Do not mix up EarthScope's or the IRIS-NRL node response data with those available at AusPass. Theirs couldbe inverted relativeto our data! We also stronglysuspectthat the responseinformation at IRIS-NRL is not correcteither. In generalwe have low confidence intheinformation providedbutcan confirmthatourmetadatais at least "pretty close".56 +Do not mix up EarthScope's or the IRIS-NRL node response data with those available at AusPass. Theirs will likely be inverted relative to our data! 57 57 {{/warning}} 58 58 59 59