How do you recognize that $|\zeta(s)|$ has ridges, where $\zeta(s)$ is the Riemann Zeta function?

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Let $s=\sigma+it$ the complex variable, thus our notation will be $\Re s=\sigma$ and $\Im s=t$.

MathWorld article for the Riemann Zeta Function refers that $$|\zeta(s)|$$ has "ridges" for $0<\sigma<1$ and I understand that then for $t>0$, and shows us with a plot those for $0<\Im s<100$.

Question. Can you tell us if one can detect easily ( how do you recognize, and if it's possible with easy calculations, I say in a cheap manner) that for $0<\Re s<1$, there exists real numbers $a<b$ such that $|\zeta(s)|$ has a ridge here $a<\Im s<b$. Many thanks.

Thus I am asking for an explicit example $1<a<\Im s<b<100$, that is if it's possible an explicit example of $a$ and $b$ showing how detect the ridge with mathematics. You are welcome if you want add yourself graphics, to illustrate your explanation.