Ana Moreno

Ana Moreno
Spanish National Research Council | CSIC · Department of Geoenvironmental Processes

Ph.D.

About

254
Publications
73,789
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
8,055
Citations
Citations since 2017
73 Research Items
4033 Citations
20172018201920202021202220230200400600
20172018201920202021202220230200400600
20172018201920202021202220230200400600
20172018201920202021202220230200400600
Additional affiliations
June 2006 - February 2008
University of Minnesota Twin Cities
Position
  • PostDoc Position
January 2003 - present
Spanish National Research Council
Position
  • Researcher
January 1998 - February 2003
University of Barcelona
Position
  • PhD Student

Publications

Publications (254)
Article
Full-text available
Over the last years, perennial ice deposits located within caves have awakened interest as places to study microbial communities since they represent unique cryospheric archives of climate change. Since the beginning of the twentieth century, the temperature has gradually increased, and it is estimated that by the end of this century the increase i...
Chapter
Full-text available
During a flood inside a cave, sands and silts are transported through the cave system and deposited as (i) a coating of this detritus on speleothem surfaces and (ii) a flood bed accumulated on the cave passages which are protected from the main water stream. After the floodwater level drops, speleothem deposition is restarted and detrital coatings...
Chapter
Full-text available
Show caves are great natural attractions and constitute important economic engines for particular rural areas. However, cave management requires knowledge of the cave dynamics to ensure adequate exploitation and conservation (e.g. number of visitors, amount of CO2, other impacts). Show caves located close to the hydrological base level can be affec...
Article
Full-text available
En este trabajo se presenta el reto que muchas veces supone conseguir un buen modelo de edad independiente en una secuencia paleoambiental. Esta aproximación pasa por la necesidad de combinar diferentes metodologías de datación, con la complejidad que esto implica. Se han seleccionado dos ejemplos de dos archivos paleoambientales muy distintos, y c...
Preprint
Ice caves are one of the least studied parts of the cryosphere, particularly those located in inaccessible permafrost areas at high altitudes or high latitudes. We characterize the climate dynamics and the geomorphological features of Devaux cave, an outstanding ice cave in the Central Pyrenees on the French-Spanish border. Two distinct cave sector...
Article
Full-text available
The rate and consequences of future high latitude ice sheet retreat remain a major concern given ongoing anthropogenic warming. Here, new precisely dated stalagmite data from NW Iberia provide the first direct, high-resolution records of periods of rapid melting of Northern Hemisphere ice sheets during the penultimate deglaciation. These records re...
Conference Paper
Full-text available
Centimeter-thick layers of gypsum (CaSO4·2H2O) were deposited at the bottom of Laguna de Zoñar (Córdoba Province, southern Spain) from ~2120 to ~1900 cal yr BP [1], coinciding with the apogee of the Roman Empire in the Iberian Peninsula. The presence of gypsum deposits in lake sediments is generally interpreted as evidence of dry climatic periods i...
Article
Full-text available
Speleothems and detrital deposits in caves are excellent archives of past flood events but are still poorly exploited. In this study we evaluate, the potential of the Ojo de Valjunquera cave (Zaragoza, NE Spain) for the study of past floods based on geomorphological, topographical, hydrological, and chronological data. The cave comprises two subhor...
Article
Full-text available
Glaciers and their microbiomes are exceptional witnesses of the environmental conditions from remote times. Climate change is threatening mountain glaciers, and especially those found in southern Europe, such as the Monte Perdido Glacier (northern Spain, Central Pyrenees). This study focuses on the reconstruction of the history of microbial communi...
Article
In Alpine regions, speleothem development on karst systems largely occurs during warm interglacial or interstadial phases due to their limited growth during cold stages. Still, recent attention has been given to the role of clastic sediments in caves, less dependent on temperature conditions. Yet, only a small number of caves worldwide preserve bot...
Article
This study presents the first high-resolution speleothem-based hydrological reconstruction for much of the last 2.7 kyr in the central-western Mediterranean. The paleohydrological information comes from a combination of five U-Th dated stalagmites from two Mallorca island caves. Interpretations are based on high-resolution records of δ¹⁸O, δ¹³C and...
Article
Because they can archive a variety of geochemical proxies and be precisely and accurately dated with the U-Th decay series chronometer, stalagmites are widely used for paleoclimate reconstructions. However, limitations in the use of this chronometer arise because U-Th dating is analytically time consuming, expensive, and requires a relatively large...
Article
Full-text available
Pyrenean glaciers are the largest in southern Europe. Their survival is threatened by climate change, highlighting the significance of their study. This research presents an assessment of changes in the glacierized area and thickness of Pyrenean glaciers from 2011 to 2020, using high-resolution optical satellite, airborne lidar and UAV images. The...
Article
Full-text available
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 a west-to-east transect across northern Spain for 2010–2017. The main aim of this study is to (1) characterize the rainfall isotopic variability in northern Spain at daily and monthly timesca...
Article
Full-text available
Studies of rainfall isotopic composition in the Iberian Peninsula are scarce, and to date, none of them have provided analyses of the triple oxygen isotopes, preventing from the complete understanding of current atmospheric processes in this region. We investigate the rainwater δ ¹⁷ O, δ ¹⁸ O, and δD and derived parameters ¹⁷ O-excess and d-excess...
Article
Major disruptions in the North Atlantic circulation during the last deglaciation triggered a series of climate feedbacks that influenced the course of Termination I, suggesting an almost synchronous response in the ocean-atmosphere system. We present a replicated δ18O stalagmite record from Ostolo cave in the northern Iberian Peninsula with a robus...
Article
Full-text available
Mountain glaciers have generally experienced an accelerated retreat over the last 3 decades as a rapid response to current global warming. However, the response to previous warm periods in the Holocene is not well-described for glaciers of the southern Europe mountain ranges, such as the Pyrenees. The situation during the Medieval Climate Anomaly (...
Article
This study examines the first precisely dated and temporally highly resolved speleothem record from Iberia that reconstructs the Oldest Dryas (OD). The onset of cold conditions in the study area, contemporary with the beginning of Heinrich Stadial 1, is recorded at 18.13 ± 0.08 ka, with a pronounced drop of 6.1‰ in δ ¹³ C in 250 years. Henceforth,...
Chapter
The term speleothem refers to carbonate deposits in caves: mainly stalactites, stalagmites and stalagmite floors.
Chapter
Full-text available
La presencia inicial de los humanos en la alta montaña desde hace poco menos de 8000 años presenta más ele-mentos de domesticación de lo que inicialmente se había estimado. raciones arqueológicas es todavía limitada, hay evidencias de uso de ganado doméstico y, en algunos casos, una probable agricultura utilizando mezcla de cereales a cotas interme...
Article
Full-text available
Significance The Younger Dryas (YD) was an ∼1,300-y period of extreme climate that dramatically reversed the course of global warming that brought the last Ice Age to a close. Understanding what mechanisms triggered and terminated this event remains enigmatic, but it is fundamental for gaining insights into the inner workings of Earth’s climate sys...
Preprint
Full-text available
This article presents for the first time a large dataset of rainfall isotopic measurements (d18Op and d2Hp) sampled every day or every two days from seven sites in a west-to-east transect across northern Spain for 2010–2017. The main aim of this study is to: (1) characterize rainfall isotopic variability in northern Spain at daily and monthly time...
Article
Full-text available
Few continental palaeoenvironmental sedimentary sequences from Southern Europe are long enough to span the last interglacial period (Marine Isotopic Stage-MIS 5), the last glacial cycle (MIS 4 to 2) and the Holocene. El Cañizar de Villarquemado (North-Eastern Iberian Peninsula) is an exceptional sedimentary lacustrine sequence spanning the last ca....
Article
We have analyzed potential harmful trace elements (PHTE; Pb, Hg, Zn, As and Cu) on sediment cores retrieved from lake Marboré (LM) (2612 m a.s.l, 42°41′N; 0° 2′E). PHTE variability allowed us to reconstruct the timing and magnitude of trace metal pollutants fluxes over the last 3000 years in the Central Pyrenees. A statistical treatment of the data...
Article
Full-text available
Late Quaternary volcanic basins are active landscapes from which detailed archives of past climate and seismic and volcanic activity can be obtained. A multidisciplinary study performed on a transect of sediment cores was used to reconstruct the depositional evolution of the high-elevation Laguna del Maule (LdM) (36∘ S, 2180 m a.s.l., Chilean Andes...
Preprint
Full-text available
Mountain glaciers have generally experienced an accelerated retreat over the last three decades as a rapid response to current global warming. However, the response to previous warm periods in the Holocene is not well-described for glaciers of the of southern Europe mountain ranges, such as the Pyrenees. The situation during the Medieval Climate An...
Preprint
Full-text available
Abstract. Late Quaternary volcanic basins are active landscapes from which detailed archives of past climate, seismic and volcanic activity can be obtained. A multidisciplinary study performed on a transect of sediment cores was used to reconstruct the depositional evolution of the high-elevation Laguna del Maule (LdM) (36° S, 2180 m asl, Chilean A...
Article
This study explores the climatic variability in the Iberian Peninsula (IP) and its surrounding seas from 140 to 65 kyr BP. Marine sediment cores and cave speleothems are used to reconstruct changes in sea surface water conditions, deep sea current intensities and atmospheric moisture availability based on stable isotopes, trace elements, grain size...
Article
This work presents the paleoenvironmental reconstructions from three mountaineous lakes located in northern Iberia. The results from the three lakes are compared and completed with classical magnetic analyses in order to detect the influence of different processes on the record and preservation of magnetic properties. The lakes are located in the C...
Poster
A large geochemestry were analyzed in a stalagmite from Ardales Cave (SW-Spain) to assess paleoclimate. The stalagmite was actively growing in 2007 upon collection and U-Th dates suggest that began forming 1000 years ago. Large variations in Mg/Ca ratios occur on both seasonal and multidecadal timescales. We infer that in dry periods there would be...
Article
Full-text available
Although quantitative isotope data from speleothems has been used to evaluate isotope-enabled model simulations, currently no consensus exists regarding the most appropriate methodology through which to achieve this. A number of modelling groups will be running isotope-enabled palaeoclimate simulations in the framework of the Coupled Model Intercom...
Poster
Full-text available
The last deglaciation (from ≈19 kyr BP to the beginning of the Holocene) is a time interval in which all components of the climate system underwent large-scale changes associated with global warming that led to the end of the last glacial period (Dansgaard et al. ., 1993). Although it is well known that this trend was marked by several heating and...
Poster
Full-text available
This study explores the use of stalagmites to record extreme coastal conditions with the aim for a better understanding of these events and their periodicity. This work applies a multi-proxy study on a speleothem from a coastal cave developed in schists under a Miocene marine terrace in Central Chile, a very unusual context. An innovative approach...
Article
Full-text available
The oxygen isotope composition of speleothems is a widely used proxy for past climate change. Robust use of this proxy depends on understanding the relationship between precipitation and cave drip water δ18O. Here, we present the first global analysis, based on data from 163 drip sites, from 39 caves on five continents, showing that drip water δ18O...
Conference Paper
Full-text available
Chronology of tufa deposits in the Val river (Iberian Range, Soria Province): Fluvial tufa build-ups located in the Val river (Ágreda, Soria province) have been investigated. Important tufa terraces crop out from Val spring to 8 km downstream along the river. U/Th ages derived from post-depositional speleothems corroborate previous radiocarbon ages...
Article
Full-text available
We provide first insights into the speleogenesis of Ejulve cave (Teruel province, Iberian Range, NE Spain) by studying cave morphologies and cave deposits, combined with regional geomorphological and hydrothermal observations. Three main hydrogeomorphic evolutionary stages can be distinguised to explain the origin and evolution of the Ejulve endoka...
Article
We present a multidisciplinary dating approach - including radiocarbon, Uranium/Thorium series (U/Th), paleomagnetism, single-grain optically stimulated luminescence (OSL), polymineral fine-grain infrared stimulated luminescence (IRSL) and tephrochronology - used for the development of an age model for the Cañizar de Villarquemado sequence (VIL) fo...
Article
Full-text available
This work combines very detailed measurements from terrestrial laser scanner (TLS), ground-based interferometry radar (GB-SAR) and ground-penetrating radar (GPR) to diagnose current conditions and to analyse the recent evolution of the Monte Perdido Glacier in the Spanish Pyrenees from 2011 to 2017. Thus, this is currently one of the best monitored...
Chapter
Full-text available
La humanidad ha transformado nuestro planeta durante milenios a través de cambios en el paisaje y en los ciclos biogeoquímicos debidos al uso de recursos naturales y a actividades como la agricultura, ganadería y la minería que pueden causar impactos como contaminación de aguas y suelos y deforestación, entre otros. La magnitud y extensión de estos...
Chapter
Full-text available
Los ecosistemas litorales se encuentran en un delicado equilibrio entre la influencia marina y terrestre, albergan una alta biodiversidad y ejercen un importante control sobre los ciclos y flujos biogeoquímicos entre los continentes y los océanos. Las proyecciones de cambio climático para los próximos 100 años señalan a estos ambientes como altamen...
Article
Full-text available
This study was conducted in Ejulve cave (Spain, southwestern Europe) over a period of four years (2013–2016) to identify the factors affecting the isotopic composition of rainfall, dripwaters, and farmed calcite. The results indicate that δ¹⁸O of rainfall in the study area was mainly controlled by the temperature effect (r² = 0.82, p-value < 0.001)...
Article
The study of three lacustrine sedimentary archives along an altitudinal transect in the Southern Central Pyrenees - lakes Estanya, Basa and Marboré- has provided a unique record of changes in anthropogenic trace metal concentrations over the last six centuries in NE Iberian Peninsula. Although site-specific processes influence metals enrichments in...
Article
Full-text available
This paper presents a new Holocene palaeoecological record from coastal south-eastern Spain, a region characterised by high plant species diversity, varied physiography, high risk of desertification, and a history of human pressure on the landscape that stretches to antiquity. The pollen sequence shows four main vegetation phases: the first charact...
Article
Full-text available
Sedimentological, geochemical and magnetic data in a ~ 7-m sequence from Marboré Lake (2612 m asl, central Pyrenees) provide information about environmental variability since the last glacier retreat (14.6 cal ka BP) in high-altitude Pyrenean environments. The sediment sequence is composed of millimeter- to centimeter-thick rhythmites made of finer...
Article
Perennial ice deposits in caves represent unique, but underexplored, terrestrial sequences that potentially contain outstanding palaeoclimatic records. Here, we present a pioneer palaeoenvironmental study of an ice deposit preserved in a small sag-type cave (A294) in the Central Pyrenees (northern Iberian Peninsula). The 9.25-m-thick sequence, whic...
Article
Abstract Comparison of selected, well-dated, lacustrine, speleothem and terrestrial pollen records spanning the Holocene onset and the Early Holocene (ca. 11.7–8 cal kyrs BP) in the Iberian Peninsula shows large hydrological fluctuations and landscape changes with a complex regional pattern in timing and intensity. Marine pollen records from Albora...
Article
Full-text available
Atmospheric relative humidity is an important parameter affecting vegetation yet paleo-humidity proxies are scarce and difficult to calibrate. Here we use triple oxygen (d17O and d18O) and hydrogen (dD) isotopes of structurally-bound gypsum hydration water (GHW) extracted from lacustrine gypsum to quantify past changes in atmospheric relative humid...
Chapter
In Spain there are at least 156 ice caves inventoried in the Pyrenees, Cantabrian Mountains, and Teide. In the Pyrenees there are ice caves in at least seven different massifs and in the Cantabrian Mountains are concentrated mainly in the Picos de Europa. In eight ice caves there have been applied techniques such as endoclimatic survey, geochronolo...
Article
The Little Ice Age (LIA) is known as one of the coldest stages of the Holocene. Most records from the Northern Hemisphere show evidence of significantly colder conditions during the LIA, which in some cases had substantial socio-economic consequences. In this study we investigated the magnitude and timing of climate variability during the LIA in th...
Article
Full-text available
Significance We present an outstanding speleothem record that reconstructs the vegetation activity and hydrological availability during Termination III (T-III) in Southern Europe throughout δ ¹³ C, δ ¹⁸ O, and Mg/Ca variations. The results reveal for the North Atlantic region the sequence of abrupt stadial events during T-III, in close analogy to t...
Article
This paper presents the environmental, climate and vegetation changes reconstructed for the last 14.6 kyr cal BP from the Marbor? Lake sedimentary sequence, the highest altitude record (2612 m a.s.l.) in the Pyrenees studied up to date. We investigate the sensitivity of this high altitude site to vegetational and climate dynamics and altitudinal sh...
Article
New speleothem records from northeastern Iberian caves provide data to explore the climatic patterns during the Holocene. We present δ ¹³ C and Mg/Ca from three speleothems from two different caves located in the Iberian Range allowing replication of the climatic signal for several millennia. Through the integration of those stalagmites covering si...
Article
Full-text available
The multidisciplinary analysis of natural climate change archives (ice cores, lacustrine and marine sediments, speleothems, etc.) have allowed to reconstruct the main variations in temperature and hydrological conditions recorded during the Quaternary period (last 2.58 million years). Many of these reconstructions are available online in databases...
Article
Full-text available
The study of past climates, particularly those occurring during the Quaternary, is a fundamental tool to understand both current geoenvironmental processes and their past evolution without anthropogenic activities. It is based on the information stored in different paleorecords, both terrestrial (lacustrine sediments, stalagmites, peatbogs, tree-ri...
Conference Paper
Evolution of the Conquezuela palaeolake, located in the eastern margin of the Iberian Peninsula Northern Plateau, has been investigated using multiproxy analyses (sedimentology, XRF geochemistry, palynology) and with a chronological control based on optically stimulated luminescence (OSL) and AMS techniques. The 10 m-thick sedimentary sequence show...
Conference Paper
Full-text available
The Granite Cave is located on the left side of the glaciated Ara River valley (Bujaruelo Central Pyrennes, Iberian Peninsula). The cave is formed by a unique slightly inclined conduit, containing an important sequence of fluvial deposits up to 40 m-thick. The origin of these deposits is related to the erosion of former moraines situated in the upp...
Conference Paper
Full-text available
Lake Butrint is a lagoon of tectonic origin located on the southern Ionian Sea coast of Albania. Its relatively high water depth (ca. 21 m) and progressive isolation from the sea has led to permanent water stratification, allowing the deposition of varved sediments formed by seasonal laminae (endogenic calcite, organic matter, and clay) during the...
Poster
Full-text available
Lake Butrint is a lagoon of tectonic origin located on the southern Ionian Sea coast of Albania. Its relatively high water depth (ca. 21 m) and progressive isolation from the sea has led to permanent water stratification, allowing the deposition of varved sediments formed by seasonal laminae (endogenic calcite, organic matter, and clay) during the...