Some previous theories have attributed this darkening to water on top of the ice sheet — often seen as strikingly sapphire blue ponds, rivers and lakes. (sciencedaily.com)
The researchers hoped to study the waterways at the top of the ice sheet, which transport water across the ice or funnel it down towards the bedrock. (climatecentral.org)
Some previous theories have attributed this darkening to water on top of the ice sheet — often seen (co2coalition.org)