Is there a name for when the president declares a state of emergency?

Question

what article/section of the constitution is this found in?

Answer 1

http://en.wikipedia.org/wiki/State_of_Em...

Answer 2

Martial Law (Suspension of Habeas Corpus)

The Constitutional Topics pages at the US Constitution.net site are presented to delve deeper into topics than can be provided on the Glossary Page or in the FAQ pages. This Topic Page concerns Martial Law. Martial law is not explicitly mentioned in the Constitution, but the suspension of habeas corpus is mentioned in Article 1, Section 9, and the activation of the militia in time of rebellion or invasion is mentioned in Article 1, Section 8. The Topic Page for Military Justice may also be of interest.