Alps Catalog

[Colleen Bramham]

Anumber of details on Alps switches come from a 1994 Alps catalogue that was circulated amongst Japanese keyboard enthusiasts, obtained around 2004 or 2005. The original catalogue was in colour, and was scanned to PDF. Black and white photostat copies were also made and passed to various people. The original catalogue and the PDF document are considered lost, as are all photocopies besides Sandy's, which is the only copy known to remain.

The owner of the catalogue asked Alps Electric for permission to republish it, and was denied. Photos provided from Sandy depicting parts of pages (but not whole pages) were posted to Deskthority and Geekhack before Alps's prior restriction was noted.

The SKCL/SKCM part numbers come from Sandy's transcript. SKFR/SKFS part numbers likely also came from Sandy; currently the only confirmed details are in an archive of geekhack wiki, which itself cited this same catalogue.[1]

Sandy provided the following notes in November 2013 (taken from a plain text e-mail). Whether they are verbatim or summarised is not known, and none of the explanatory text should be considered official Alps information without clarification.

It is interesting to note that the two series are given as "CL series" and "CM series" instead of "SKCL" and "SKCM", which partially corresponds with the catalogue fragment (from an older catalogue) that identified Alps SKCM Cream (SKCMAF) and Alps SKCM Blue (SKCMAG). Although "SKCL/SLCM series" was used in an official Alps document, this may indicate a terminology revision. (The text below is given verbatim, including typing mistakes and transcription errors. For example, "SLCLAQ" should read "SKCLAQ")

ALPS (Advancing Leadership, Partnerships, and Scholarship), the College of Health Professions' Center of Excellence, is dedicated to supporting the academic mission of the College of Health Professions through external funding, facilitation of faculty scholarship, student opportunities, partnerships, and leadership development.

The Center provides opportunities for faculty to develop their scholarship in education, research and practice through a variety of partnerships at the local, national and international levels, and access to internal and external funding. To learn more about research CHP has facilitated, please visit www.pace.edu/college-health-professions/research.

The Center facilitates student-centered learning experiences that further enhance the high quality professional education of College of Health Professions students to prepare them to embrace the professional challenges in health care in the 21st Century. The Center promotes leadership development in nursing and health care. For more information about ALPS, please visit www.pace.edu/alps.

Since 2017, the Maurienne Valley (French Alps) has been affected by an episode of seismic unrest. In this study we focused on the seismic swarm that occurred in 2017 and 2018, which was characterized by 8 events with ML > 3 and a maximum magnitude of 3.7. The goal was to extend the existing SISmalp catalog, and also to provide accurate locations and magnitude estimations.The employed data was recorded by a local seismic network composed of 6 broadband stations. The use of template matching allowed us to detect more than 70000 events, increasing the detection rate by more than ten times compared to the original catalog. We obtained high resolution locations applying a double difference relocation method, providing as input differential times calculated by cross-correlating templates with their respective detections. Finally, we estimated magnitudes using template-family-based linear regression analysis, in order to include even the weakest events. The seismic locations will be discussed in the tectonic and geological setting of the Maurienne Valley.

Seismic monitoring in the northern French Alps was launched in 1987 with the installation of the first Sismalp seismological network, hosted by the Observatoire des Sciences de la Terre of Grenoble Alpes University and managed by the Institut des Sciences de la Terre. Since 1987, the network has been updated over the years, keeping pace with technical developments in instrumentation, monitoring and data management. The homogenization of information over the period 1987-2023 was motivated by the need for a single instrumental seismic catalog. The final SISMalp-1987-2023 catalog contains 50,822 earthquakes with a completeness magnitude of less than 1, and can be used as a basis for all general seismotectonic and seismic risk assessment studies.

The resulting seismicity distribution generally confirms the previously identified main seismically active domains, but provides increased resolution of the fault activity at depth. In particular, the high number of small events additionally detected by the template search contributes to a more dense catalogue, providing an important basis for future geological and tectonic studies in this complex part of the Alpine orogen.

we are very thankful for your helpful comments and suggestions. Attatched to this message is a document with answers to all the points raised in your review of the manuscipt, with a description of the changes made to the text and figures.

Since 1987, the network has been updated over the years, keeping pace with technical developments in instrumentation, monitoring and data management. The homogenization of information over the period 1987-2023 was motivated by the need for a single instrumental seismic catalog. The final SISMalp-1987-2023 catalog contains 50,822 earthquakes with a completeness magnitude of less than 1, and can be used as a basis for all general seismotectonic studies and seismic risk assessments in the Alpine region.

Technical validation is described in Virieux et al. (2024) via an in-depth study of the influence of parameters and choices for local seismic tomography (LET), which inverts local-regional earthquake arrival time selections for P- and S-wave velocities in conjunction with hypocenter parameters.

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