4.7 Article

Oxidative conditions along the continental shelf of the Southeast Pacific during the last two millennia: a multiproxy interpretation of the oxygen minimum zone variability from sedimentary records

Related references

Note: Only part of the references are listed.
Article Environmental Sciences

The ENSO-induced South Pacific Meridional Mode

Boris Dewitte et al.

Summary: This study investigates the relationship between El Nino Southern Oscillation (ENSO) and the South Pacific Meridional Mode (SPMM) by focusing on strong SPMM events following strong El Nino events. The research finds that there is a stationary relationship between ENSO and SPMM in both observations and simulations. Strong SPMM events are associated with coastal warming off northern central Chile, caused by waves forced at the equator during El Nino events. The time delay between ENSO peak and this coastal warming can be explained by the differential contribution of equatorially-forced propagating waves. Few models accurately simulate this ENSO/SPMM relationship and its oceanic teleconnection.

FRONTIERS IN CLIMATE (2023)

Article Geosciences, Multidisciplinary

Trace elements V, Ni, Mo and U: A geochemical tool to quantify dissolved oxygen concentration in the oxygen minimum zone of the north-eastern Pacific

Alberto Sanchez et al.

Summary: This study discusses the variability of the oxygen minimum zone (OMZ) in relation to global climate change by examining the deoxygenation of the water column. In situ measurements and qualitative assessments were used to infer the variability of OMZ on various timescales. A regression model was proposed based on trace element concentrations in surface sediments and dissolved oxygen concentrations in the water column. The model allowed the inference of dissolved oxygen concentrations over the past 250 years. The results suggest a reoxygenation of the OMZ at the mouth of the Gulf of California, consistent with previous studies.

JOURNAL OF MARINE SYSTEMS (2022)

Article Environmental Sciences

Metal enrichment evolution in marine sediments influenced by oxygen-deficient waters in a mineral loading zone, Atacama, Chile (27° S)

Praxedes Munoz et al.

Summary: This study examines the influence of the oxygen minimum zone and industrialization on metal concentrations in sediments in the SE-Pacific and Caldera Bay. The findings show clear impacts of industrial activities on copper and moderate impacts on iron, lead, and zinc. Additionally, the study observes authigenic enrichment of nutrient type and redox-sensitive elements. The study highlights the importance of natural processes in metal distribution in marine sediments.

MARINE ENVIRONMENTAL RESEARCH (2022)

Article Oceanography

Mesoscale Variability in the Boundaries of the Oxygen Minimum Zone in the Eastern South Pacific: Influence of Intrathermocline Eddies

P. A. Auger et al.

Summary: Studies have shown that in the eastern South Pacific oxygen minimum zone (OMZ), the influence of anticyclonic intrathermocline eddies (ITEs) significantly affects the vertical OMZ boundaries and thickness. ITEs leave lens-shaped signatures on vertical distributions and have a major impact on oxycline variability in coastal and mid-latitude regions.

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS (2021)

Review Oceanography

Oxygen minimum zone variability during the last 700 years in a coastal upwelling area of the Humboldt system (Mejillones, 23? S, Chile). A new approach from geochemical signature

Jorge Valdes et al.

Summary: Mejillones Bay presents a permanent and shallow oxygen minimum zone (OMZ) with fluctuations in dissolved oxygen over the past 700 years. Sediment cores from the bay have revealed three distinct ocean-climatic periods, with varying levels of dissolved oxygen. The sedimentological approach used in Mejillones Bay to reconstruct paleoxygenation is considered preliminary, highlighting the need for further exploration of similar methodologies in different environments.

PROGRESS IN OCEANOGRAPHY (2021)

Review Environmental Sciences

Assessment of C, N, and Si Isotopes as Tracers of Past Ocean Nutrient and Carbon Cycling

J. R. Farmer et al.

Summary: Biological productivity in the ocean affects the distribution of carbon between the atmosphere and ocean, with stable isotope analysis providing insights into carbon and nutrient cycling, as well as their relationship with biological productivity and global climate. This review examines the potential of stable isotope measurements in sedimentary records to reconstruct past ocean carbon and nutrient cycling, highlighting opportunities for future research and addressing uncertainties and limitations in using these proxies to understand changes in the oceans and climate system.

GLOBAL BIOGEOCHEMICAL CYCLES (2021)

Review Oceanography

System controls of coastal and open ocean oxygen depletion

Grant C. Pitcher et al.

Summary: The Anthropocene epoch has seen a decline in oxygen concentrations and expansion of oxygen-depleted environments due to human activities. Case studies highlight the complexity of factors influencing oxygen concentrations, requiring system-specific models for understanding and predicting future changes.

PROGRESS IN OCEANOGRAPHY (2021)

Article Environmental Sciences

Centennial hydroclimatic and anthropogenic processes of South East South America modulate interannual and decadal river discharge

Laura Perez et al.

Summary: The study of RdlP mud depocenter revealed that centennial hydrological and proxy variability is mainly modulated by climate variability modes. The increase in agricultural activities, particularly soy bean cultivation, combined with intensified rainfall and runoff, led to higher continental input and marine productivity changes, affecting soil erosion and sediment transport, with the final fate being the RdlP mud depocenter.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Geochemistry & Geophysics

Redox classification and calibration of redox thresholds in sedimentary systems

Thomas J. Algeo et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2020)

Review Geosciences, Multidisciplinary

Redox-sensitive trace metals as paleoredox proxies: A review and analysis of data from modern sediments

William W. Bennett et al.

EARTH-SCIENCE REVIEWS (2020)

Article Geography, Physical

Mid-Holocene deepening of the Southeast Pacific oxycline

Elfi Mollier-Vogel et al.

GLOBAL AND PLANETARY CHANGE (2019)

Article Geography, Physical

The Medieval Climate Anomaly in South America

Sebastian Luening et al.

QUATERNARY INTERNATIONAL (2019)

Article Geochemistry & Geophysics

Variations in Denitrification and Ventilation Within the Arabian Sea Oxygen Minimum Zone During the Holocene

Pratima M. Kessarkar et al.

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS (2018)

Article Environmental Sciences

Cross-equatorial winds control El Nino diversity and change

Shineng Hu et al.

NATURE CLIMATE CHANGE (2018)

Article Geochemistry & Geophysics

Molybdenum speciation and burial pathway in weakly sulfidic environments: Insights from XAFS

Meghan Wagner et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2017)

Article Geosciences, Multidisciplinary

Is El Nino really changing?

Antonietta Capotondi et al.

GEOPHYSICAL RESEARCH LETTERS (2017)

Article Geochemistry & Geophysics

Expansion of pelagic denitrification during early Pleistocene cooling

Rebecca S. Robinson et al.

EARTH AND PLANETARY SCIENCE LETTERS (2014)

Article Geography, Physical

Anchovy population and ocean-climatic fluctuations in the Humboldt Current System during the last 700 years and their implications

Marcos Guinez et al.

PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY (2014)

Article Geosciences, Multidisciplinary

The response of the Peruvian Upwelling Ecosystem to centennial-scale global change during the last two millennia

R. Salvatteci et al.

CLIMATE OF THE PAST (2014)

Article Multidisciplinary Sciences

Highly Variable El Nino-Southern Oscillation Throughout the Holocene

Kim M. Cobb et al.

SCIENCE (2013)

Article Meteorology & Atmospheric Sciences

Impact of Earth's orbit and freshwater fluxes on Holocene climate mean seasonal cycle and ENSO characteristics

P. Braconnot et al.

CLIMATE DYNAMICS (2012)

Article Oceanography

Nitrogen isotope gradients off Peru and Ecuador related to upwelling, productivity, nutrient uptake and oxygen deficiency

Elfi Mollier-Vogel et al.

DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS (2012)

Article Oceanography

Change in El Nino flavours over 1958-2008: Implications for the long-term trend of the upwelling off Peru

B. Dewitte et al.

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2012)

Article Geography, Physical

Mid-Holocene mean climate in the south eastern Pacific and its influence on South America

Matthieu Carre et al.

QUATERNARY INTERNATIONAL (2012)

Article Meteorology & Atmospheric Sciences

Support for global climate reorganization during the Medieval Climate Anomaly

N. E. Graham et al.

CLIMATE DYNAMICS (2011)

Article Geosciences, Multidisciplinary

Coastal cooling and increased productivity in the main upwelling zone off Peru since the mid-twentieth century

Dimitri Gutierrez et al.

GEOPHYSICAL RESEARCH LETTERS (2011)

Article Geosciences, Multidisciplinary

Increased glacial-age ventilation of the Chilean margin by Antarctic Intermediate Water

J. M. Muratli et al.

NATURE GEOSCIENCE (2010)

Article Geosciences, Multidisciplinary

Holocene changes in the position and intensity of the southern westerly wind belt

Frank Lamy et al.

NATURE GEOSCIENCE (2010)

Review Geochemistry & Geophysics

Environmental analysis of paleoceanographic systems based on molybdenum-uranium covariation

T. J. Algeo et al.

CHEMICAL GEOLOGY (2009)

Article Oceanography

Vertical and horizontal extension of the oxygen minimum zone in the eastern South Pacific Ocean

Rosalino Fuenzalida et al.

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2009)

Article Oceanography

Controls on sedimentary nitrogen isotopes along the Chile margin

Ricardo De Pol-Holz et al.

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2009)

Article Geosciences, Multidisciplinary

Trace element signatures of Chilean upwelling sediments at ∼36°S

Philipp Boening et al.

MARINE GEOLOGY (2009)

Article Multidisciplinary Sciences

Revising the nitrogen cycle in the Peruvian oxygen minimum zone

Phyllis Lam et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2009)

Review Oceanography

The Humboldt Current System: Ecosystem components and processes, fisheries, and sediment studies

Vivian Montecino et al.

PROGRESS IN OCEANOGRAPHY (2009)

Article Geochemistry & Geophysics

Deglacial pattern of circulation and marine productivity in the upwelling region off central-south Chile

Mahyar Mohtadi et al.

EARTH AND PLANETARY SCIENCE LETTERS (2008)

Article Geography, Physical

Holocene changes in eastern tropical Pacific climate inferred from a Galapagos lake sediment record

Jessica L. Conroy et al.

QUATERNARY SCIENCE REVIEWS (2008)

Article Geosciences, Multidisciplinary

Enhancement of coastal upwelling and interdecadal ENSO-like variability in the Peru-Chile Current since late 19th century

Gabriel Vargas et al.

GEOPHYSICAL RESEARCH LETTERS (2007)

Article Geography, Physical

Southern Ocean control on the extent of denitrification in the southeast Pacific over the last 70 ka

Rebecca S. Robinson et al.

QUATERNARY SCIENCE REVIEWS (2007)

Article Geosciences, Multidisciplinary

Maintaining of the Eastern South Pacific Oxygen Minimum Zone (OMZ) off Chile

A. Paulmier et al.

GEOPHYSICAL RESEARCH LETTERS (2006)

Review Geochemistry & Geophysics

Molybdenum and uranium geochemistry in continental margin sediments: Paleoproxy potential

James McManus et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2006)

Review Geochemistry & Geophysics

Trace metals as paleoredox and paleoproductivity proxies: An update

Nicolas Tribovillard et al.

CHEMICAL GEOLOGY (2006)

Article Geosciences, Multidisciplinary

Seasonal variability of the permanent thermocline off northern Chile

Marcel Ramos et al.

GEOPHYSICAL RESEARCH LETTERS (2006)

Article Geosciences, Multidisciplinary

Melting of the Patagonian Ice Sheet and deglacial perturbations of the nitrogen cycle in the eastern South Pacific

R De Pol-Holz et al.

GEOPHYSICAL RESEARCH LETTERS (2006)

Article Geosciences, Multidisciplinary

Geochemical characteristics of Chilean upwelling sediments at ∼36°S

P Böning et al.

MARINE GEOLOGY (2005)

Article Marine & Freshwater Biology

Osseous skeletal material and fish scales in marine sediments under the oxygen minimum zone off northern and central Chile

AC Milessi et al.

ESTUARINE COASTAL AND SHELF SCIENCE (2005)

Article Geosciences, Multidisciplinary

Variations in the Pacific Decadal Oscillation over the past millennium

GM MacDonald et al.

GEOPHYSICAL RESEARCH LETTERS (2005)

Article Oceanography

Global distribution of naturally occurring marine hypoxia on continental margins

JJ Helly et al.

DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS (2004)

Review Geochemistry & Geophysics

Geochemistry of Peruvian near-surface sediments

P Böning et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2004)

Article Oceanography

Recent sedimentation and mass accumulation rates based on Pb-210 along the Peru-Chile continental margin

P Munoz et al.

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2004)

Article Oceanography

Biological and chemical consequences of the 1997-1998 El Nino in the Chilean coastal upwelling system: a synthesis

R Escribano et al.

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2004)

Article Geosciences, Multidisciplinary

Characteristics and formation of eastern South Pacific intermediate water -: art. no. 1581

W Schneider et al.

GEOPHYSICAL RESEARCH LETTERS (2003)

Article Geosciences, Multidisciplinary

Dynamics of seasonal and interannual variability of the Peru-Chile Undercurrent

O Pizarro et al.

GEOPHYSICAL RESEARCH LETTERS (2002)

Article Geochemistry & Geophysics

Remobilization of authigenic uranium in marine sediments by bioturbation

Y Zheng et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2002)

Review Geochemistry & Geophysics

Suboxic trace metal geochemistry in the eastern tropical North Pacific

TJ Nameroff et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2002)

Article Geosciences, Multidisciplinary

Evolution and biological effects of the 1997-98 El Nino in the upwelling ecosystem off northern Chile

O Ulloa et al.

GEOPHYSICAL RESEARCH LETTERS (2001)

Article Geochemistry & Geophysics

Authigenic molybdenum formation in marine sediments: A link to pore water sulfide in the Santa Barbara Basin

Y Zheng et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2000)

Article Geochemistry & Geophysics

Molybdenum(VI) speciation in sulfidic waters: Stability and lability of thiomolybdates

BE Erickson et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2000)