Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  Accurately calibrated X-ray fluorescence core scanning (XRF-CS) record of Ti ∕ Al reveals Early Pleistocene aridity and humidity variability over North Africa and its close relationship to low-latitude insolation

Hennekam, R., Grant, K. M., Rohling, E. J., Tjallingii, R., Heslop, D., Roberts, A. P., Lourens, L. J., Reichart, G.-J. (2022): Accurately calibrated X-ray fluorescence core scanning (XRF-CS) record of Ti ∕ Al reveals Early Pleistocene aridity and humidity variability over North Africa and its close relationship to low-latitude insolation. - Climate of the Past, 18, 11, 2509-2521.
https://doi.org/10.5194/cp-18-2509-2022

Item is

Dateien

einblenden: Dateien
ausblenden: Dateien
:
5014120.pdf (Verlagsversion), 7MB
Name:
5014120.pdf
Beschreibung:
-
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Hennekam, Rick1, Autor
Grant, Katharine M.1, Autor
Rohling, Eelco J.1, Autor
Tjallingii, Rik2, Autor              
Heslop, David1, Autor
Roberts, Andrew P.1, Autor
Lourens, Lucas J.1, Autor
Reichart, Gert-Jan1, Autor
Affiliations:
1External Organizations, ou_persistent22              
24.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146046              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: In eastern Mediterranean sediments, the titanium-to-aluminum ratio () captures relative variability in eolian to river-derived material and predominantly integrates climate signals over the Saharan and Sahel regions. Long time series can, therefore, provide valuable records of North African humidity and aridity changes. X-ray fluorescence core scanning (XRF-CS) can generate near-continuous records with relatively modest effort and in an acceptable amount of time, provided that accurate values are acquired. Calibration of raw XRF-CS data to those of established analytical methods is an important pathway for obtaining the required accuracy. We assess how to obtain reliable XRF-CS calibration by using different calibration reference sample sets for a long sediment record from ODP Site 967 (eastern Mediterranean Sea). The accuracy of reference concentrations and the number of reference samples are important for reliable calibration. Our continuous record allows detailed time series analysis over the past 3 Myr. Near-direct control of low-latitude insolation on the timing and amplitude of North African aridity and humidity is observed from 3 to ∼ 1.2 Ma. In our record, most arid North African intervals (i.e., with the longest period and highest amplitude) occur after the mid-Pleistocene transition (MPT; ∼ 1.2–0.7 Ma), when ice ages intensified. We also observe a subdued relationship between low-latitude insolation and North African climate after the MPT. These findings support the growing consensus that African climate became more sensitive to remote high-latitude climate when a threshold ice volume was reached during the MPT.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2022-11-222022
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.5194/cp-18-2509-2022
GFZPOF: p4 T2 Ocean and Cryosphere
OATYPE: Gold Open Access
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Climate of the Past
Genre der Quelle: Zeitschrift, SCI, Scopus, oa
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 18 (11) Artikelnummer: - Start- / Endseite: 2509 - 2521 Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals78
Publisher: Copernicus