Climate change at the 4.2 ka BP termination of the Indus valley civilization and Holocene south Asian monsoon variability

  title={Climate change at the 4.2 ka BP termination of the Indus valley civilization and Holocene south Asian monsoon variability},
  author={Michael Staubwasser and Frank Sirocko and Pieter M. Grootes and Monika Segl},
  journal={Geophysical Research Letters},
Planktonic oxygen isotope ratios off the Indus delta reveal climate changes with a multi‐centennial pacing during the last 6 ka, with the most prominent change recorded at 4.2 ka BP. Opposing isotopic trends across the northern Arabian Sea surface at that time indicate a reduction in Indus river discharge and suggest that later cycles also reflect variations in total annual rainfall over south Asia. The 4.2 ka event is coherent with the termination of urban Harappan civilization in the Indus… 

Indian winter and summer monsoon strength over the 4.2 ka BP event in foraminifer isotope records from the Indus River delta in the Arabian Sea

Abstract. The plains of northwest South Asia receive rainfall during both the Indian summer (June–September) and winter (December–March) monsoon. Researchers have long attempted to deconstruct the

Abrupt weakening of the summer monsoon in northwest India ∼4100 yr ago

Climate change has been suggested as a possible cause for the decline of urban centers of the Indus Civilization ~4000 yr ago, but extant paleoclimatic evidence has been derived from locations well

A Record of Holocene Climate Change from Lake Geochemical Analyses in Southeastern Arabia

Hydro-climatic variability in the southwestern Indian Ocean between 6000 and 3000 years ago

Abstract. The “4.2 ka event” is frequently described as a major global climate anomaly between 4.2 and 3.9 ka, which defines the beginning of the current Meghalayan age in the Holocene epoch. The

Atmospheric blocking induced by the strengthened Siberian High led to drying in west Asia during the 4.2 ka BP event – a hypothesis

Abstract. Causal explanations for the 4.2 ka BP event are based on the amalgamation of seasonal and annual records of climate variability that was manifest across global regions dominated by

Millennial‐scale variability in Red Sea circulation in response to Holocene insolation forcing

In order to assess how insolation-driven climate change superimposed on sea level rise and millennial events influenced the Red Sea during the Holocene, we present new paleoceanographic records from

Hydroclimatic changes in south-central China during the 4.2 ka event and their potential impacts on the development of Neolithic culture

Abstract The 4.2 ka event is widely presumed to be a globally widespread aridity event and has been linked to several episodes of societal changes across the globe. Whether this climate event

Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea

From temporal variation in δ18O in Globigerinoides ruber and G. sacculifer and geochemical indices of weathering/erosion (chemical index of alteration, Al and Ti), we infer rapid southwest monsoon



High-resolution holocene environmental changes in the thar desert, northwestern india

Sediments from Lunkaransar dry lake in northwestern India reveal regional water table and lake level fluctuations over decades to centuries during the Holocene that are attributed to changes in the

Holocene variations in Asian monsoon moisture: A bidecadal sediment record from the South China Sea

The East Asian monsoon system involves extensive transport of sensible/latent heat between land and sea and from low to high latitudes. Our high resolution, bidecadal marine records present a first

Hydrological changes in the African tropics since the Last Glacial Maximum

  • F. Gasse
  • Environmental Science, Geography
  • 2000

High‐resolution temperature and evaporation changes during the Late Holocene in the northeastern Arabian Sea

In order to reconstruct the monsoonal variability during the late Holocene we investigated a complete, annually laminated sediment record from the oxygen minimum zone (OMZ) off Pakistan for oxygen

Coherent high- and low-latitude climate variability during the holocene warm period

A faunal record of sea-surface temperature (SST) variations off West Africa documents a series of abrupt, millennial-scale cooling events, which punctuated the Holocene warm period, documenting a strong, in-phase link between millennial- scale variations in high- and low-latitude climate during the Hololithic.

Asynchronous glaciation at Nanga Parbat, northwestern Himalaya Mountains, Pakistan

We present a new glacial chronology demonstrating asynchroneity between advances of Himalayan glaciers and Northern Hemisphere ice-sheet volumes. Glaciers at Nanga Parbat expanded during the early to

South Asian monsoon climate change and radiocarbon in the Arabian Sea during early and middle Holocene

The 1 4 C ages of planktonic foraminifers Globigerinoides sacculifer bracketing the Younger Dryas in a δ 1 8 O record of Globigerinoides ruber from a laminated sediment core on the Pakistani

Teleconnections Between the Subtropical Monsoons and High-Latitude Climates During the Last Deglaciation

The major deglacial intensification of the southwest monsoon occurred at 11,450 ± 150 calendar years before present, synchronous with a major climate transition as recorded in Greenland ice. An

Climate change and the collapse of the Akkadian empire: Evidence from the deep sea

The Akkadian empire ruled Mesopotamia from the headwaters of the Tigris-Euphrates Rivers to the Persian Gulf during the late third millennium B.C. Archeological evidence has shown that this highly