A5080350363- Geology and Paleoclimatology Research
- Geological and Geophysical Studies Worldwide
- Karst Systems and Hydrogeology
- Archaeological and Geological Studies
- Archaeological and Historical Studies
- Geological formations and processes
- Groundwater and Isotope Geochemistry
- Pleistocene-Era Hominins and Archaeology
- Landslides and related hazards
- Archaeology and ancient environmental studies
- Historical and socio-economic studies of Spain and related regions
- Cryospheric studies and observations
- Tree-ring climate responses
- Soil erosion and sediment transport
- Mediterranean and Iberian flora and fauna
- Isotope Analysis in Ecology
- Medieval Architecture and Archaeology
- Hydrology and Sediment Transport Processes
- Geomagnetism and Paleomagnetism Studies
- Building materials and conservation
- Geological and Geochemical Analysis
- Maritime and Coastal Archaeology
- Paleontology and Stratigraphy of Fossils
- Medieval and Early Modern Iberia
- Media, Journalism, and Communication History
Universidad de Zaragoza
2014-2024
University of British Columbia
2024
Basque Centre for Climate Change
2020
Red de Investigación Cardiovascular
2015
Universitat Politècnica de València
2013
Universidad de Los Andes
2008
Significance This study presents robust evidence of two hydrological phases within the Greenland Stadial 1 (GS-1) cold event (12.8−11.7 ka B.P.) in Southern Europe. We present a well-dated high-resolution speleothem record (Seso Cave, Central Pyrenees) where temperature and signals are independently reconstructed. Detailed interpretation stable isotopes trace elements allow characterizing first dry period followed, after 12,500 y before 2000 A.D., by more humid conditions. Our findings point...
Modelling experiments of drainage events from proglacial lakes the Río Baker catchment (central Patagonia, 46–48 ⁰S) indicate that Atlantic-Pacific reversals may have caused freshwater forcing regional climate. However, much region remains unmapped in detail and available geochronological data is equivocal, leading to multiple published palaeolake evolution models. We evaluate these models through new geomorphological mapping valley; cosmogenic dating moraine boulders demonstrates an...
Abstract. Reconstructing of past hydroclimates at regional scales during the Common Era (CE) is necessary to place current warming in context natural climate variability. Here we present a composite record oxygen isotope variations last 2500 years based on eight stalagmites from four caves central Pyrenees (NE Spain) dominated by temperature variations, with amount precipitation playing minor role. The dataset compared other Iberian reconstructions that show high degree internal coherence...
The ragón alley glacier (entral estern yrenees) has been studied since the late nineteenth century and become one of best areas in yrenees to study occurrence leistocene glaciations relationships between moraines fluvial terraces. New morphological studies absolute ages for terraces allow a correlation with other yrenean glaciers provide solid chronologies about asynchroneity global last glacial maximum ice extent. Six frontal arcs three lateral morainic ridges were identified illanúa basin...
Abstract Sedimentological and hydrochemical parameters of the River Piedra (north‐east Spain) were monitored every six months (from 1999 to 2012) at 24 sites, which tablets installed all along river. The river water is HCO 3 –SO 4 –Ca type notably influenced by inputs from upstream karstic springs. Tufa deposition was first detected 8 km downstream these springs greatly increased there, primarily steeper stretch (i.e. within Monasterio de Natural Park); then, decreased through most stretch,...
Abstract. Ice caves are understudied environments within the cryosphere, hosting unique ice deposits valuable for paleoclimate studies. Recently, many of these have experienced accelerated retreat due to global warming, threatening their existence. The A294 cave contains world’s known oldest firn deposit (6100 years cal. BP), which is progressively waning. This study presents 12 (2009–2021) monitoring data from A294, including temperature measurements both outside and inside cave, meteoric...
Abstract The Pleistocene and Holocene tufas of the Añamaza valley (stepped build‐ups, up to 70 m thick, along valley) consist several depositional stages separated by erosional surfaces. Eight associations tufa related carbonate facies, plus minor polygenic detrital represent processes that occurred in different fluvial environments. bedrock lithology structure controlled location knickpoints allowed separation two stepped stretches with distinct conceptual facies models. moderate‐slope...
The drainage area of the Iberian Ranges (NE Spain) houses one most extensive Quaternary fluvial tufaceous records in Europe. In this study, tufa deposits Añamaza, Mesa, Piedra and Ebrón river valleys were mapped, stratigraphically described chronologically referenced from U/Th disequilibrium series, amino acid racemization radiocarbon methods. Tufa accumulated cascades, barrage-cascades related damming areas developed stepped systems. maximum frequency deposition was identified at 120 ka...
Abstract New speleothem records from northeastern Iberian caves provide data to explore the climatic patterns during Holocene. We present δ 13 C and Mg/Ca three speleothems two different located in Range allowing replication of signal for several millennia. Through integration those stalagmites covering since Holocene onset 2 ka, early (11.7–8.5 ka) appears as wettest interval. A marked change towards aridity is observed middle (8.5–4.8 an increase humidity afterwards (4.8–2 ka). This...
Abstract Tree lines are supposed to react sensitively the current global change. However, lack of a long‐term (millennial) perspective on tree line shifts in Pyrenees prevents understanding underlying ecosystem dynamics and processes. We combine multiproxy palaeoecological analyses (fossil pollen, spores, conifer stomata, plant macrofossils, ordination) from an outstanding ice cave deposit located alpine belt c . 200 m above (Armeña‐A294 Ice Cave, 2,238 a.s.l.), assess for first time...
Abstract. For the first time, this article presents a large dataset of precipitation isotopic measurements (δ18Op and δ2Hp) sampled every day or 2 d from seven sites on west-to-east transect across northern Spain for 2010–2017. The main aim study is to (1) characterize rainfall variability in at daily monthly timescales (2) assess principal factors influencing variability. relative role air temperature determining stable isotope composition changes along transect, with being highly...
Abstract Sandstone structural landscapes in the semi‐arid Torrollones de Gabarda area (Province of Huesca, NE Spain) are often covered by a well developed biological soil crust lichens, mosses and cyanobacteria black coatings on vertical surfaces. By using scanning electron microscopy with backscattered detector imaging, studied evidenced high activity sandstone–crust interface. Processes such as physical disintegration, etching dwelling biomineralization calcium oxalate fixation mineral...