Global disasters come in all sorts and sizes. The economic crisis, to some degree, can also be considered a global catastrophe, it all depends on scale.
In this case, it is likely that a strong outflow of capital will be in cryptocurrency.
In the event of an environmental disaster, anything can be.
In my opinion, regardless of disaster, from financial disaster to environmental disaster, the value of bitcoin is likely to decline dramatically because talking about financial disaster, that will make us imagine a collapse, loss, investors will preserve their capital, cutting losses on investments is what they will do. And speaking of environmental disasters, it creates a lot of losses from people and assets, sometimes it can affect the real estate of big investors, sources of investment in bitcoin must be cut to have the cost of solving this disaster