A5047499771- Cryospheric studies and observations
- Climate change and permafrost
- Planetary Science and Exploration
- Polar Research and Ecology
- Nonlinear Partial Differential Equations
- Geology and Paleoclimatology Research
- Astro and Planetary Science
- Advanced Mathematical Modeling in Engineering
- Geological and Geochemical Analysis
- Space Exploration and Technology
- Geological and Tectonic Studies in Latin America
- Nonlinear Differential Equations Analysis
- Arctic and Antarctic ice dynamics
- earthquake and tectonic studies
- Geological and Geophysical Studies Worldwide
- Cardiac Arrest and Resuscitation
- Differential Equations and Boundary Problems
- Differential Equations and Numerical Methods
- Space Science and Extraterrestrial Life
- Advanced Mathematical Physics Problems
- Spacecraft and Cryogenic Technologies
- Spectral Theory in Mathematical Physics
- Landslides and related hazards
- Geometric Analysis and Curvature Flows
- Methane Hydrates and Related Phenomena
Pontifical Catholic University of Peru
2025
Universidad de Alcalá
2015-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2014-2024
University of Buenos Aires
2014-2024
Hospital Universitari Germans Trias i Pujol
2024
Centro de Investigación en Red en Enfermedades Cardiovasculares
2024
Centro de Investigación Biomédica en Red de Enfermedades Respiratorias
2024
Pfizer (United States)
2024
Université Paris Cité
2024
Centre National de la Recherche Scientifique
2024
Permafrost warming has the potential to amplify global climate change, because when frozen sediments thaw it unlocks soil organic carbon. Yet date, no globally consistent assessment of permafrost temperature change been compiled. Here we use a data set time series from Global Terrestrial Network for evaluate across regions period since International Polar Year (2007-2009). During reference decade between 2007 and 2016, ground near depth zero annual amplitude in continuous zone increased by...
This paper reviews and analyses the past 20 years of change variability European mountain permafrost in response to climate based on time series ground temperatures along a south–north transect deep boreholes from Sierra Nevada Spain (37°N) Svalbard (78°N), established between 1998 2000 during EU-funded PACE (Permafrost Climate Europe) project. In (at Veleta Peak), no is encountered. All other are drilled permafrost. Results show that warmed at all sites down depths 50 m or more. The warming...
Abstract Results obtained during the International Polar Year (IPY) on thermal state of permafrost and active layer in Antarctic are presented, forming part ANTPAS (‘Antarctic Permafrost Soils’), which was one key projects developed by Association Scientific Committee for Research IPY. The number boreholes active‐layer monitoring increased from 21 to 73 IPY, while CALM‐S sites monitor were 18 28. temperatures IPY slightly below 0°C South Shetlands near sea‐level, showing that this area is...
In the first 100 Martian solar days (sols) of Mars Science Laboratory mission, Rover Environmental Monitoring Station (REMS) measured seasonally evolving diurnal cycles ultraviolet radiation, atmospheric pressure, air temperature, ground relative humidity, and wind within Gale Crater on Mars.As an introduction to several REMS-based articles in this issue, we provide overview design performance REMS sensors discuss our approach mitigating some difficulties encountered following landing,...
Abstract NASA’s Perseverance rover’s Mars Environmental Dynamics Analyzer is collecting data at Jezero crater, characterizing the physical processes in lowest layer of Martian atmosphere. Here we present measurements from instrument’s first 250 sols operation, revealing a spatially and temporally variable meteorology Jezero. We find that temperature four heights capture response atmospheric surface to multiple phenomena. observe transition stable night-time thermal inversion daytime, highly...
Abstract The Mars Environmental Dynamics Analyzer (MEDA) on board Perseverance includes first‐of‐its‐kind sensors measuring the incident and reflected solar flux, downwelling atmospheric IR upwelling flux emitted by surface. We use these measurements for first 350 sols of 2020 mission (L s ∼ 6°–174° in Martian Year 36) to determine surface radiative budget calculate broadband albedo (0.3–3 μm) as a function illumination viewing geometry. Together with MEDA ground temperature, we thermal...
Number counts of galaxy clusters across redshift are a powerful cosmological probe, if precise and accurate reconstruction the underlying mass distribution is performed -- challenge called calibration. With advent wide deep photometric surveys, weak gravitational lensing by has become method choice to perform this measurement. We measure validate (WL) signature in shape galaxies observed first 3 years DES Y3 caused selected all-sky survey SRG/eROSITA. These data then used determine scaling...
The Northern Patagonian Andes have been constructed through multiple mechanisms that range from tectonic inversion of extensional structures Early to Middle Jurassic age in the Main Oligocene Precordilleran region. These acted during two distinctive orogenic stages, first late Cretaceous and later Miocene times Late extension separates these contractional periods is recorded by half‐grabens developed retroarc last stage coexists with an eastward foreland expansion arc whose roots are...
Abstract We describe preliminary results from the first 100 sols of ground temperature measurements along Mars Science Laboratory's traverse Bradbury Landing to Rocknest in Gale. The data show long‐term increases mean that are consistent with seasonal evolution. Deviations expected trends within diurnal cycle observed and may be attributed rover environmental effects. Fits measured amplitudes using a thermal model suggest surfaces have inertias range 265–375 J m −2 K −1 s −1/2 , which values...
The Antarctic Peninsula has had a globally large increase in mean annual temperature from the 1951 to 1998 followed by decline that still continues. challenge is now unveil whether these recent, complex and somewhat unexpected climatic changes are biologically relevant. We were able do this determining growth of six lichen species on recently deglaciated surfaces over last 24 years. Between 1991 2002, when summer (MST) rose 0.42 °C, five responded with increased growth. MST declined 0.58 °C...
Abstract As SARS-CoV-2 evolves, increasing in potential for greater transmissibility and immune escape, updated vaccines are needed to boost adaptive immunity protect against COVID-19 caused by circulating strains. Here, we report features of the monovalent Omicron XBB.1.5-adapted BNT162b2 vaccine, which contains XBB.1.5-specific sequence changes, relative original backbone, encoded prefusion-stabilized spike protein (S(P2)). Biophysical characterization XBB.1.5 S(P2) demonstrated that it...
We provide indirect evidence for the formation of frost at surface Gale crater by analyzing highest confidence data from simultaneous measurements relative humidity and ground temperature during first 1000 sols Mars Science Laboratory (MSL) mission. find that except sol 44, events could have occurred only between 400 710, corresponding to most humid coldest time year (from early fall late winter). In particular, Dingo Gap 529–535, an unnamed place 554–560, Kimberley 609–617 673–676 showed...
The analysis of the surface energy budget (SEB) yields insights into soil-atmosphere interactions and local climates, while thermal inertia (I) shallow subsurfaces provides context for evaluating geological features. Mars orbital data have been used to determine inertias at horizontal scales ∼104 m2 ∼107 m2. Here we use measurements ground temperature atmospheric variables by Curiosity calculate Gale Crater ∼102 We analyze three sols representing distinct environmental conditions soil...
Monitoring of active layer thawing depth and thickness (ALT), using mechanical pronging continuous temperature data logging, has been undertaken under the Circumpolar Active Layer – South (CALM-S) program at a range sites across Antarctica. The objective this study was to summarize key from in different Antarctic regions 2006 2015 review state Antarctica effectiveness CALM-S program. 16 involving 8 another boreholes have used study. Probing for thaw depth, while giving information on local...
Abstract. Permafrost is present within almost all of the Antarctic's ice-free areas, but little known about spatial variations in permafrost temperatures except for a few areas with established ground temperature measurements. We modelled at top (TTOP) Antarctic mainland and islands 1 km2 resolution during 2000–2017. The model was driven by remotely sensed land surface downscaled ERA-Interim climate reanalysis data, subgrid variability simulated variable snow cover. results were validated...
Abstract. Climate-induced warming of permafrost soils is a global phenomenon, with regional and site-specific variations which are not fully understood. In this context, 2-D automated electrical resistivity tomography (A-ERT) system was installed for the first time in Antarctica at Deception Island, associated to existing Crater Lake site Circumpolar Active Layer Monitoring – South Program (CALM-S) site. This setup aims (i) monitor subsurface freezing thawing processes on daily seasonal...
De Quervain's tenosynovitis is a pathology that affects the tendons of thumb and generates pain inflammation, being common in people between 18 30 years old who perform repetitive movements. Despite innovation 3D printing orthotics, customization lacking. Therefore, this works aims to develop printed customized wrist-hand orthosis (WHO) for treatment Quervain tenosynovitis. The WHO includes three main parts, which would be two faces cover front back hand locks ensure coupling both faces....
We study an elliptic system of the form<inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper L u equals StartAbsoluteValue v EndAbsoluteValue Superscript p minus 1 Baseline v"><mml:semantics><mml:mrow><mml:mi>L</mml:mi><mml:mi>u</mml:mi><mml:mo>=</mml:mo><mml:msup><mml:mrow><mml:mo>|</mml:mo><mml:mi>v</mml:mi><mml:mo>|</mml:mo></mml:mrow><mml:mrow...
We prove that, for any $\lambda \in \mathbb {R}$, the system $-\Delta u +\lambda = u^3-\beta uv^2$, v+\lambda v =v^3-\beta vu^2$, $u,v\in H^1_0(\Omega ),$ where $\Omega$ is a bounded smooth domain of $\mathbb {R}^3$, admits family positive solutions $(u_{\beta }, v_{\beta })$ as $\beta \to +\infty$. An upper bound on number nodal sets weak limits $u_{\beta }-v_{\beta }$ also provided. Moreover, sufficiently large fixed value >0$ infinitely many solutions.