Zobrazeno 1 - 10
of 684
pro vyhledávání: '"K. Tachikawa"'
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 6627-6655 (2024)
Stable water isotopes (δ18Ow and δDw) have been successfully implemented for the first time in a high-resolution model of the Mediterranean Sea (NEMO-MED12). In this numerical study, model results are compared with available in situ observations to
Externí odkaz:
https://doaj.org/article/7b43998da306441485e43fb5b5ec2f53
Autor:
S. Robinson, R. F. Ivanovic, L. J. Gregoire, J. Tindall, T. van de Flierdt, Y. Plancherel, F. Pöppelmeier, K. Tachikawa, P. J. Valdes
Publikováno v:
Geoscientific Model Development, Vol 16, Pp 1231-1264 (2023)
The neodymium (Nd) isotopic composition of seawater is a widely used ocean circulation tracer. However, uncertainty in quantifying the global ocean Nd budget, particularly constraining elusive non-conservative processes, remains a major challenge. A
Externí odkaz:
https://doaj.org/article/0e989a49669647799ebcc67775563b4c
Publikováno v:
Biogeosciences, Vol 20, Pp 205-227 (2023)
The relative importance of river solid discharge, deposited sediment remobilisation, and atmospheric dust as sources of neodymium (Nd) to the ocean is the subject of ongoing debate, the magnitudes of these fluxes being associated with a significant u
Externí odkaz:
https://doaj.org/article/b8abe7ef92414594935a7419857662a3
Autor:
C. T. Bolton, E. Gray, W. Kuhnt, A. E. Holbourn, J. Lübbers, K. Grant, K. Tachikawa, G. Marino, E. J. Rohling, A.-C. Sarr, N. Andersen
Publikováno v:
Climate of the Past, Vol 18, Pp 713-738 (2022)
In the modern northern Indian Ocean, biological productivity is intimately linked to near-surface oceanographic dynamics forced by the South Asian, or Indian, monsoon. In the late Pleistocene, this strong seasonal signal is transferred to the sedimen
Externí odkaz:
https://doaj.org/article/07ddf86a8b374f04a3bb3177edf84c47
Publikováno v:
Biogeosciences, Vol 18, Pp 2827-2841 (2021)
Oxygen minimum zones (OMZs) are oceanic areas largely depleted in dissolved oxygen, nowadays considered in expansion in the face of global warming. To investigate the relationship between OMZ expansion and global climate changes during the late Quate
Externí odkaz:
https://doaj.org/article/d27d283f3a5c4a6caecbdacfc06d9c02
Autor:
K. Tachikawa, L. Vidal, M. Cornuault, M. Garcia, A. Pothin, C. Sonzogni, E. Bard, G. Menot, M. Revel
Publikováno v:
Climate of the Past, Vol 11, Iss 6, Pp 855-867 (2015)
Holocene eastern Mediterranean Sea sediments contain an organic-rich sapropel S1 layer that was formed in oxygen-depleted waters. The spatial distribution of this layer revealed that during S1 deposition, deep waters were anoxic below a depth of 1800
Externí odkaz:
https://doaj.org/article/3d4ae378102441878c934f7475f1554f
Publikováno v:
Climate of the Past, Vol 10, Iss 1, Pp 405-418 (2014)
The intensity and/or extent of the northeastern Pacific Oxygen Minimum Zone (OMZ) varied in-phase with the Northern Hemisphere high latitude climate on millennial timescales during the last glacial period, indicating the occurrence of atmospheric and
Externí odkaz:
https://doaj.org/article/08ae19d676f54c22843c32225ac11a1f
Publikováno v:
Climate of the Past, Vol 7, Iss 1, Pp 75-90 (2011)
By reconstructing past hydrologic variations in the Northern Caribbean Sea and their influence on the stability of the Atlantic Meridional Overturning Circulation (AMOC) during the last 940 ka, we seek to document climate changes in this tropical are
Externí odkaz:
https://doaj.org/article/e346db7bbca94742966b77a8a636c1b6
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Akademický článek
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