On the determination of hydrological characteristics of ancient stream which flowed in the Nergal valley on Mars

Abstract

An ancient stream which flowed in the Nergal valley of Mars was 9.7 in deep, 803.3 m wide, its flow velocity was 5.9 m/s and discharge about 46,000 cub. m per sec. The values suggest abundant rainfall on Mars in the past. The calculations brought the author to a conclusion on the existence of at least one relatively warm «interglacial» on Mars (the time when the Nergal valley developed) which lasted not less than 6,000 years.