An incisive look at the debate around this issue by one of India's foremost archaeological thinkers. Ratnagar looks at the issue in light of Indian Independence and the various political issues and currents that affect archaeological discourse and interpretations.
Articles on the decline and fall of what we know as the ancient Harappan or Indus Valley Civilization and the factors that might have led to its disappearance as a political or cultural entity after about 1900 BCE.
The archaeologist George F. Dales, who excavated at Mohenjo-daro in 1964, and hydrologist Robert L. Raikes propose a theory around the decline of the Indus civilization which involves large flooding and a back-up of the Indus for perhaps a century in ancient times.
A complex meta-analysis of data in a corner of northwestern India for what it can tell us about settlement patterns during the ancient Indus period and just after, when a host of factors, including possibly climate change, seem to have contributed to a re-allocation of populations between types of settlements.
Rita P. Wright, an archaeologist with long experience understanding the Indus areas around Harappa (see the Beas Settlement and Land Survey) looks at the complex evidence surrounding the decline of Indus civilization at the end of the third and beginning of the second millennium (around 2000 BCE and afterwards).
Another important and very recent (late October 2020) paper by Asko Parpola. He examines the 2018 finds from the Late Harappan site of Sanauli near Delhi in light of his research on early Indo-Aryan languages in the subcontinent and their origin in Central Asia.