Glossary
========

.. glossary::

   AEIC
      `ASEAN Earthquake Information Center <http://aeic.bmkg.go.id>`_

   BMKG
      `Indonesian Meteorological, Climatological and Geophysical Agency - Badan
      Meteorologi, Klimatologi, dan Geofisika <https://www.bmkg.go.id/>`_

   CSV
      Comma-separated values file

   Displacement
      A GNSS displacement is a |toast| object representing the difference in
      position of a point before and after an event.

   ETA
      Estimated Tsunami Arrival

   ETM
       Estimated Time of Maximum Sea Level

   EMSSH
       Estimated Sea Surface Height

   FFT
       Fast Fourier Transform. See:
       `Wikipedia - FFT <https://en.wikipedia.org/wiki/Fast_Fourier_transform>`_.

   GFZ
      `German Research Centre for Geosciences <https://www.gfz-potsdam.de/en>`_

   GIF
      Graphics Interchange Format

   GITEWS
      `German Indonesian Tsunami Early Warning System <https://www.gitews.org/en>`_

   Green's Law
      When propagating into shallower water, tsunami waves slow down and increase
      in amplitude. See:
      `Wikipedia - Green's law <https://en.wikipedia.org/wiki/Green%27s_law>`_.

   GUITAR
      GUI for Tsunami Alert Review (Predecessor of :term:`TOAST`)

   HTML
      Hypertext Markup Language

   IIR
      Infinite Impulse Response. See:
      `Wikipedia - IIR <https://en.wikipedia.org/wiki/Infinite_impulse_response>`_.

   Incident
      The term :term:`event` is used in |scname| and the term *incident* in
      |toast| context.
      An *event* object contains data related to a seismic event, like origins,
      magnitudes, focal mechanisms, type and also preferred origin, preferred
      magnitude and preferred focal mechanism.
      An *incident* is the main object when using |toast|.
      It contains tsunami relevant data like source parameters (magnitude,
      location, depth, time, nodal planes), observed tsunami data (picks,
      amplitudes) and simulation references.
      It can also contain a reference to a |scname| event object, which is the
      case for automatically generated incidents.
      If an artificial incident is created manually, it does not contain an
      event reference.

   Kagan angle
      Represents the difference between the orientation of two focal mechanisms
      (moment tensors). See: Y. Y. Kagan, 3-D rotation of double-couple
      earthquake sources, Geophysical Journal International, Volume 106,
      Issue 3, September 1991.
      In |toast| usually the term *rotation Angle* is used, both for the
      minimum rotation angle between focal mechanisms as well between nodal
      planes, in which case an adapted version of the Kagan angle is computed.

   NTWC
      National Tsunami Warning Center (USA)

   OTA
      Observed time of tsunami arrival

   OTM
      Observed time of tsunami maximum wave height

   OMSSH
      Observed tsunami maximum wave height

   OTP
      Observed tsunami period

   POI
      Point Of Interest (Tide gauge, buoy or GNSS station)

   PTWC
      `Pacific Tsunami Warning Center <https://www.tsunami.gov/>`_

   RTSP
      Regional Tsunami Service Provider

   SSH
      Sea Surface Height deviation from mean sea level

   T1
      Time of exceedance of the detection threshold (only positive amplitude
      by default, configurable on plugin level via T1Threshold and T1Absolute).

   T2
      Time of first exceedance of the threat threshold

   T3
      Time of maximum positive amplitude

   T4
      Time of last exceedance of the threat threshold

   Tx Value
      SSH value at above times

   TOAST
      Tsunami Observation and Simulation Terminal

   XML
      Extensible Markup Language