Consider the following statements regarding Glacial Lake Outburst Floods (GLOFs) and the Himalayan cryosphere:

Statements

1. Supraglacial lakes are permanent water bodies that form in bedrock depressions at the base of a glacier, and they typically exhibit stable surface areas over multi-year periods.
2. Moraine-dammed glacial lakes are formed when meltwater accumulates behind natural dams of glacial debris, and their outburst can release large volumes of water rapidly downstream.
3. Satellite-based Earth observation is used for near-real-time monitoring of Himalayan glacial lake systems because ground-based access to high-altitude glaciated terrain is logistically difficult and time-consuming.