A5078103740- Geology and Paleoclimatology Research
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Marine and fisheries research
- Marine and coastal plant biology
- Methane Hydrates and Related Phenomena
- Geological and Tectonic Studies in Latin America
- Geological formations and processes
- Marine and coastal ecosystems
- Marine animal studies overview
- Ocean Acidification Effects and Responses
- Marine Biology and Ecology Research
- Heavy metals in environment
- Geochemistry and Elemental Analysis
- Groundwater and Isotope Geochemistry
- Oceanographic and Atmospheric Processes
- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Coastal and Marine Management
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Environmental and Cultural Studies in Latin America and Beyond
- Marine Bivalve and Aquaculture Studies
Universidad Autónoma de Baja California
2010-2024
TerraMetrics (United States)
2024
McMaster University
1988-1995
Sunny and Cool Changes in solar output cause changes the amount of radiation that Earth receives from Sun, which turn can climate variations. The effects variations are not uniform over globe—owing to complexity system, larger fluxes may produce warming one area but cooling another. Marchitto et al. (p. 1378 ) present a record Holocene sea surface temperature eastern equatorial Pacific Ocean shows as increased Sun dimmed. These resulted dynamical control El Niño La Niña episodes by radiative...
Preliminary stable nitrogen and carbon isotope analysis was undertaken to investigate whether the resulting data support current knowledge of diet as obtained by conventional approaches. Blue (Balaenoptera musculus), fin (B. physalus) Bryde’s edeni) whales co-occur temporally are known feed in Gulf California, Mexico. Isotope measurements were taken from: prey (three euphausiids four sardine samples); skin biopsies (two for each whale species); from faeces (one blue three samples). Although...
Piston, gravity, and multicores as well hydrographic data were collected along the Pacific margin of Baja California to reconstruct past variations in intensity oxygen‐minimum zone (OMZ). Gravity cores from within OMZ north 24°N did not contain laminated surface sediments even though bottom water oxygen (BWO) concentrations close 5 μmol/kg. However, many south millimeter‐ centimeter‐scale, brown black laminations Holocene older but deposited during Last Glacial Maximum. In addition dark...
Research Article| June 01, 2004 Enhanced marine productivity off western North America during warm climate intervals of the past 52 k.y. J.D. Ortiz; Ortiz 1Department Geology, Kent State University, Kent, Ohio 44242, USA Search for other works by this author on: GSW Google Scholar S.B. O'Connell; O'Connell 2Department Earth and Environmental Sciences, Wesleyan Middletown, Connecticut 06459, J. DelViscio; DelViscio W. Dean; Dean 3U.S. Geological Survey, Surface Processes, Box 25046, MS 980,...
Abstract Corals in the Eastern Pacific extend south from Gulf of California to Ecuador and oceanic Chile, west Colombia Clipperton Atoll. Nevertheless, large stretches Mexican remain fundamentally unstudied. Therefore, assess current conditions coral communities, a coastal fringe ∼300 km long (17°40′ N, 101°39′ W 16°46′ 99°49′ W) was surveyed within Southern Pacific, between 2005 2009. Fifteen stony species were identified at 13 communities six Pocillopora ‐dominated fringing reefs, with...
The 1982-1983 El Nino was the strongest such event recorded this century, resulting in widespread coral mortality eastern Pacific. To search for sclerochronological evidence of event, heads Porites lobata were sampled at different depths from several locations on reef Isla del Cano, Costa Rica. 8 180 stratigraphy obtainedfrom hundred analyses vertical sections through heads. timing and magnitude 19821983 are accurately isotopic records, which indicate that times stronger than other strong...
The southwestern tropical Pacific is a key center for the Interdecadal Oscillation (IPO), which regulates global climate. This study introduces groundbreaking 627-year coral Sr/Ca sea surface temperature reconstruction from Fiji, representing IPO's pole. Merging this record with other Fiji and central records, we reconstruct SST gradient between (SWCP), providing reliable proxy IPO variability 1370 to 1997. reveals distinct centennial-scale trends insights into Pacific-wide climate impacts...
In order to determine the sensitivity of coastal upwelling tracers seasonal wind forcing and El Niño–Southern Oscillation (ENSO) off Baja California Chile, nearshore salinity, cadmium (Cd), nutrients phosphate, silicate, nitrate+nitrite were monitored in surf zone waters at six locations along North South American coasts during 1997–2000. The clearest responses favorable observed southern tip (23.3°N) central‐southern Chile (36.5°S). Upwelling 23.3°N also most sensitive Niño: average summer...
Abstract Previous studies have shown that radiocarbon activities (Δ 14 C) in the low‐latitude, middepth Pacific and Indian Oceans were anomalously low during Heinrich Stadial 1 (HS1, ~17.8–14.6 ka) Younger Dryas (YD, ~12.8–11.5 ka), coincident with intervals of rising atmospheric CO 2 concentration declining Δ C. However, a full explanation these events remains elusive due to sparse sometimes conflicting data. Here we present new C measurements on benthic planktic foraminifera that,...
Aunque gran parte de los arrecifes y comunidades coralinas del Pacífico oriental han sido bien estudiados, aún existe un notable desconocimiento sobre la ocurrencia, distribución composición faunística aquellos que se encuentran en costa occidental México. Aunado al problema anterior, el margen costero esta región está siendo objeto grandes modificaciones antropogénicas pueden afectar manera irreversible a las locales. El presente trabajo tiene como objetivo describir estructura principales...
Mexican Pacific coral reefs were severely damaged by the sea surface warming observed during 1997–98 El Niño. In Banderas Bay, massive mortality was as high 97%, and surviving colonies exposed to sublethal temperatures thermal stress. this recruitment study we attempted estimate recovery potential repopulation of corals in Pacific. After Niño event, used terracotta tiles monitor settlement larval propagules at nine region. The took place from December 1998 July 1999. Settlements specimens...