Jennerjahn, Tim C; Ittekkot, Venugopalan; Arz, Helge W; Behling, Hermann; Pätzold, Jürgen; Wefer, Gerold (2004): Multiproxy sedimentation patterns of sediment cores from the continental margin off northeast Brazil. PANGAEA, https://doi.org/10.1594/PANGAEA.779792, Supplement to: Jennerjahn, TC et al. (2004): Asynchronous terrestrial and marine signals of climate change during Heinrich Events. Science, 306(5705), 2236-2239, https://doi.org/10.1126/science.1102490
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Tropical regions have been reported to play a key role in climate dynamics. To date, however, there are uncertainties in the timing and the amplitude of the response of tropical ecosystems to millennial-scale climate change. We present evidence of an asynchrony between terrestrial and marine signals of climate change during Heinrich events preserved in marine sediment cores from the Brazilian continental margin. The inferred time lag of about 1000 to 2000 years is much larger than the ecological response to recent climate change and appears to be related to the nature of hydrological changes.
Median Latitude: -3.982222 * Median Longitude: -37.357778 * South-bound Latitude: -4.613333 * West-bound Longitude: -37.716667 * North-bound Latitude: -3.666667 * East-bound Longitude: -36.640000
Date/Time Start: 1995-03-14T00:00:00 * Date/Time End: 1996-03-30T00:00:00
GeoB3104-1 * Latitude: -3.666667 * Longitude: -37.716667 * Date/Time: 1995-03-14T00:00:00 * Elevation: -767.0 m * Recovery: 5.25 m * Location: NE-Brazilian continental margin * Campaign: JOPSII-6 * Basis: Victor Hensen * Device: Gravity corer (Kiel type) (SL)
GeoB3911-3 * Latitude: -4.613333 * Longitude: -36.640000 * Date/Time: 1996-03-30T00:00:00 * Elevation: -828.0 m * Recovery: 7 m * Location: Northeast Brasilian Margin * Campaign: M34/4 * Basis: Meteor (1986) * Device: Gravity corer (Kiel type) (SL) * Comment: CC: gray clay, forams
GeoB3912-1 * Latitude: -3.666667 * Longitude: -37.716667 * Date/Time: 1996-03-30T00:00:00 * Elevation: -772.0 m * Recovery: 6.8 m * Location: Northeast Brasilian Margin * Campaign: M34/4 * Basis: Meteor (1986) * Device: Gravity corer (Kiel type) (SL) * Comment: CC: light gray carbonate mud, sandy, forams