de.pangaea.dataset991490 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-09-14T10:33:24Z https://doi.pangaea.de/10.1594/PANGAEA.991490 <gco:CharacterString>Biogenic silica of sediment core POS287_06-1B and POS287_06-2G</gco:CharacterString> 2026-03-20T10:20:49 publication https://doi.org/10.1594/PANGAEA.991490 Ribeiro, Sofia https://orcid.org/0000-0003-0672-9161 information author Gebara, Livia
livia.gebara@ipma.pt
https://orcid.org/0000-0002-1601-8825 information author Abrantes, Fatima F
fatima.abrantes@ipma.pt
https://orcid.org/0000-0002-9110-0212 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital The Iberian Margin, located in the mid-latitude North Atlantic at the western edge of the European continent, is a key region for climate and oceanographic research. The Portuguese western coast marks the northernmost boundary of the Canary Current upwelling system, experiencing seasonal wind-driven coastal upwelling from May to September. Eastern Boundary Upwelling Systems (EBUS) are among the most productive regions in the global ocean. They play a vital role in climate regulation and support both local and global fisheries. As part of the ICW3P project (PTDC/CTA-CLI/2884/2021) 'Impact of climate warming in the coastal upwelling system and primary production off Portugal: a study linking classical and emerging proxies', this study presents multi-proxy records from three inner-shelf sediment sequences. The project aimed to evaluate different nutrient sources and paleoceanographic features of the Iberian Margin and to reconstruct primary productivity and phytoplankton community variability over the past 1,000 years. This dataset presents the biogenic silica (BSi) content from a sediment record collected off the mouth of the Douro River (POS287-06G), in the north-western region of the Portuguese continental shelf, using a gravity coring system during the Poseidon cruise POS287 in 2002. Biogenic silica was measured at the Geological Survey of Denmark and Greenland using the weak base (Na2CO3) extraction method (DeMaster, 1991) and determined by spectrophotometry (blue ammonium-molybdate method, Mullin and Riley, 1955). Biogenic silica concentrations were calculated and corrected for mineral dissolution using the intercept of a linear regression, with the basic assumption that mineral-derived silica dissolves at a constant rate throughout the extraction whereas the biogenic silica dissolves within the first two hours (Barão et al., 2015). completed Ribeiro, Sofia https://orcid.org/0000-0003-0672-9161 information principalInvestigator biogenic silica coastal upwelling Iberian margin Last millennium opal POS287-06 POS287-26 spectrophotometry theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact ICW3P Impact of climate warming in the coastal upwelling system and primary production off Portugal: a study linking classical and emergent proxies theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright restricted copyright CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) textTable und geoscientificInformation -8.98883 -8.98783 41.33567 41.33567 2002-04-25T10:23:00 2002-04-25T11:30:00 0.005 5.565 Event label thematicClassification Sample code/label thematicClassification Latitude of event thematicClassification Longitude of event thematicClassification Elevation of event physicalMeasurement m m Date/Time of event thematicClassification Depth, sediment/rock, top/minimum physicalMeasurement m m Depth, sediment/rock, bottom/maximum physicalMeasurement m m DEPTH, sediment/rock physicalMeasurement m m Biogenic silica, per unit sediment dry mass physicalMeasurement see description in data abstract mg/g mg/g Biogenic silica, per unit sediment dry mass, standard deviation physicalMeasurement see description in data abstract ± ± text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.991490?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: POS287_06-1B * LATITUDE: 41.335670 * LONGITUDE: -8.987830 * DATE/TIME: 2002-04-25T10:23:00 * ELEVATION: -84.0 m * RECOVERY: 0.25 m * LOCATION: Portuguese Margin * CAMPAIGN: POS287 * BASIS: Poseidon * METHOD/DEVICE: Box corer Environment 2002-04-25T10:23:00 EVENT LABEL: POS287_06-2G (POS287_06-3G) * LATITUDE: 41.335670 * LONGITUDE: -8.988830 * DATE/TIME: 2002-04-25T11:30:00 * ELEVATION: -84.0 m * RECOVERY: 5.67 m * LOCATION: Portuguese Margin * CAMPAIGN: POS287 * BASIS: Poseidon * METHOD/DEVICE: Gravity corer Environment 2002-04-25T11:30:00 Supplement to <gco:CharacterString>Building a reliable Iberian margin chronology for the last millennium</gco:CharacterString> Abrantes, Fátima author Gomes, S author Salgado, M author Magalhães, Vitor H
vhm@ua.pt
author Salgueiro, Emilia
emilia.salgueiro@ipma.pt
https://orcid.org/0000-0003-1000-2977 information author Drago, Teresa https://orcid.org/0000-0003-3496-3270 information author Naughton, Filipa
filipa.naughton@ipma.pt
https://orcid.org/0000-0002-3055-9396 information author documentHardcopy Oceans References <gco:CharacterString>Climate of the last millennium at the southern pole of the North Atlantic Oscillation: an inner-shelf sediment record of flooding and upwelling</gco:CharacterString> 2011-01-01 publication https://doi.org/10.3354/cr01010 Abrantes, Fatima F
fatima.abrantes@ipma.pt
https://orcid.org/0000-0002-9110-0212 information author Rodrigues, Teresa
teresa.rodrigues@ipma.pt
https://orcid.org/0000-0001-7811-7506 information author Montanari, B author Santos, C https://orcid.org/0000-0002-4437-3218 information author Witt, L author Lopes, Cristina
cris.lopes@softhome.net
https://orcid.org/0000-0001-9884-5914 information author Voelker, Antje H L
antje.voelker@ipma.pt
https://orcid.org/0000-0001-6465-6023 information author documentDigital Climate Research 48(2-3) 261-280 References <gco:CharacterString>The climate of the Common Era off the Iberian Peninsula</gco:CharacterString> 2017-01-01 publication https://doi.org/10.5194/cp-13-1901-2017 Abrantes, Fatima F
fatima.abrantes@ipma.pt
https://orcid.org/0000-0002-9110-0212 information author Rodrigues, Teresa
teresa.rodrigues@ipma.pt
https://orcid.org/0000-0001-7811-7506 information author Rufino, Marta M https://orcid.org/0000-0002-0734-7491 information author Salgueiro, Emilia
emilia.salgueiro@ipma.pt
https://orcid.org/0000-0003-1000-2977 information author Oliveira, Dulce
dulce_oliveiraa@hotmail.com
https://orcid.org/0000-0002-3016-532X information author Gomes, Sandra D https://orcid.org/0000-0001-7807-3144 information author Oliveira, Paulo B https://orcid.org/0000-0001-6838-7377 information author Costa, Ana Cristina
accosta@uac.pt
https://orcid.org/0000-0003-2527-9979 information author Mil-Homens, Mário
mario.milhomens@ineti.pt
https://orcid.org/0000-0002-1570-2641 information author Drago, Teresa https://orcid.org/0000-0003-3496-3270 information author Naughton, Filipa
filipa.naughton@ipma.pt
https://orcid.org/0000-0002-3055-9396 information author documentDigital Climate of the Past 13(12) 1901-1918