Broadly, I'd argue that there is no science apart from guidance on the practice of it. Thus questions regarding the practice of the science (including standards for how data is exchanged) are on topic.
Personally, I'm a software developer, not a scientist. I hope that I can participate in the site where software applied to earth science is concerned. Anecdotally, when I was developing a SEG-Y reader there was not a good StackExchange site suited to ask questions on. So, I believe there is a gap.
I would think these questions should primarily be tagged by the subfield of earth science (e.g.
geophysics) that they relate to. However if someone wants to ignore such questions there could be a tag like
data-format for them to ignore.