Next generation miniSEED - 2016-3-30 straw man change proposal 8 - Allow digitizer to set indicators in fixed section of header

[Chad Trabant]

Hi all,

Change proposal #8 to the 2016-3-30 straw man (iteration 1) is attached: Allow digitizer to set indicators in fixed section of header.

Please use this thread to provide your feedback on this proposal by Wednesday August 24th.

thanks,
Chad

[Philip Crotwell]

I feel this would be better accomplished with the opaque headers
instead of a bit array, especially since it allows more information
and a larger list of possible issues to be recorded.

A list of commonly used "keys" for this type of things would be useful
so that the same issue is stored in the same manner across different
data loggers.

thanks
Philip

> ----------------------
> Posted to multiple topics:
> FDSN Working Group II
> (http://www.fdsn.org/message-center/topic/fdsn-wg2-data/)
> FDSN Working Group III
> (http://www.fdsn.org/message-center/topic/fdsn-wg3-products/)
>
> Sent via IRIS Message Center (http://www.fdsn.org/message-center/)
> Update subscription preferences at http://www.fdsn.org/account/profile/
>

[Chad Trabant]

Hi,

I agree with Philip. This is exactly the kind of use case that the DMC's change proposal #15, to create a mechanism for including optional headers, some defined while allowing arbitrary information, is intended to address.

There is a balance to be struck between bit flags and optional headers encoded as text values. The advantage of bit flags is size, they are very small. On the other hand they are very inflexible. Bit flags make sense when they are commonly needed and are well defined. Also, the easiest path forward when mapping SEED 2.4 miniSEED flags to the next generation is likely to simple retain the most important flags. If they do not fit those criteria, optional headers are probably better.

Chad

[Joseph Steim]

Agree strongly with retention of all information pertaining to the integrity
of the recording environment, and hence the data.

From: Chad Trabant [mailto:ch...@iris.washington.edu]
Sent: Thursday, August 11, 2016 3:52 PM
To: Tim Ahern <t...@iris.washington.edu>; Bob Hutt <Hu...@asl.cr.usgs.gov>;
Bruce Beaudoin <br...@passcal.nmt.edu>; Pete Davis
<pda...@epicenter.ucsd.edu>; Kent Anderson <ke...@iris.edu>; Bob Woodward
<wood...@iris.edu>; Katrin Hafner <haf...@iris.edu>; Justin Sweet
<jrs...@uw.edu>; Brent...@iris.edu; David Wilson <dwi...@usgs.gov>;
Mathias Franke <mathias...@kmi.com>; Ogie Kuraica <og...@kmi.com>; Neil
Spriggs <NeilS...@nanometrics.ca>; Angel Rodriguez
<an...@volcanbaru.com>; Leonid Zimakov <L.Zi...@reftek.com>; Edelvays
Spassov <e...@kmi.com>; Branden Christensen
<branden.c...@osop.com.pa>; Dieter Stoll
<dst...@lennartz-electronic.de>; Seiji Tsuboi <tsu...@jamstec.go.jp>; Jara
Salvador, Jose Antonio <JoseAnto...@icgc.cat>; David Easton
<david...@nanometrics.ca>; timp...@nanometrics.ca; John Clinton
<jcli...@sed.ethz.ch>; Vallee Martin <val...@ipgp.fr>; Constantin Ionescu
<vio...@info.ro>; Marmureanu...@dst.units.it; Bogdan Grecu
<bgr...@infp.ro>; Cristian Neagoe <cristia...@infp.ro>; Helle Pedersen
<Helle.P...@ujf-grenoble.fr>; Catherine Pequegnat
<catherine...@obs.ujf-grenoble.fr>; Pierre Volcke
<pierre...@obs.ujf-grenoble.fr>; Angelo Strollo
<str...@gfz-potsdam.de>; Sébastien Judenherc
<Sebastien...@fedd-scientific.com>; Tony Russell
<tony.r...@kenda.co.uk>; Robert Leugoud <rleu...@eentec.com>; Jiang Li
<liji...@geodevice.cn>; Lani Oncescu <la...@kmi.com>; Shawn Goessen
<sup...@guralp.com>; Dennis Pumphrey <d...@kmi.com>; Suzan Kowalski
<suzank...@nanometrics.ca>; Bruce Townsend
<brucet...@nanometrics.ca>; Joseph Steim <st...@quanterra.com>; Ian
Billings <reftek_...@trimble.com>; Claudio Parma <c.p...@solgeo.it>
Cc: fdsn Group II <fdsn-w...@lists.fdsn.org>; FDSN Working Group III
<fdsn-wg3...@lists.fdsn.org>
Subject: Next generation miniSEED - 2016-3-30 straw man change proposal 8 -