tikz pgf - Draw P and S waves illustration - TeX - LaTeX Stack Exchange

I need some help with drawing similar figures. Don't care about colour. Thanks.

latex:tikz [CMS Wiki Pages]

TikZ & PGF Manual For Version 2.10, PDF, Free Software

1. The Generic Mapping Tools — GMT 5.4.5 documentation

OceanofPDF.com LATEX Graphics with TikZ - Stefan Kottwitz

Refraction –

tikz pgf - Draw P and S waves illustration - TeX - LaTeX Stack Exchange

git log - Pretty Git branch graphs - Stack Overflow

Waves in a gas –