Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Specific Heat01:16

Specific Heat

The specific heat capacity of a substance refers to the energy required to increase the temperature of one gram of that substance by one degree Celcius. Specific heat capacity is often represented in calories (cal), grams (g), and degrees Celsius (oC), but can also be expressed in joules (J), kilograms (kg), and Kelvin (K), among other units.
For example, increasing the temperature of one gram of water by 1°C requires one calorie of heat energy and can be written as 1 cal/g-°C, or 4186 J/kg/K.
Heating and Cooling Curves02:44

Heating and Cooling Curves

When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
Thermal Expansion01:22

Thermal Expansion

The expansion of alcohol in a thermometer is one of many commonly encountered examples of thermal expansion, which is the change in size or volume of a given system as its temperature changes. The most visible example is the expansion of hot air. When air is heated, it expands and becomes less dense than the surrounding air, which then exerts an upward force on the hot air to, for example, make steam and smoke rise, and hot air balloons float. The same behavior happens in all liquids and gases,...
Requirements for Human Life01:26

Requirements for Human Life

The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
Gas Solubility01:31

Gas Solubility

Gas solubility in liquids forms liquid-gas solutions, such as soft drinks, where carbon dioxide is dissolved in water, and the ocean, where the solubility of oxygen and carbon dioxide supports marine life. The ability of oceans to dissolve gases impacts weather conditions in the troposphere.However, gas-liquid interactions vary. For instance, hydrogen chloride gas is highly soluble in water, while oxygen's solubility is much lower. Because these solutions are non-ideal, Raoult’s law, which...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same journal

Erratum for the Research Article "Awake Hippocampal Sharp-Wave Ripples Support Spatial Memory".

Science (New York, N.Y.)·2026
Same journal

Erratum for the Research Article "Granzyme A from cytotoxic lymphocytes cleaves GSDMB to trigger pyroptosis in target cells" by Z. Zhou <i>et al</i>.

Science (New York, N.Y.)·2026
Same journal

Antibodies sculpt adult brain circuits.

Science (New York, N.Y.)·2026
Same journal

Ice as a geochemical reactor.

Science (New York, N.Y.)·2026
Same journal

To eat or to breathe?

Science (New York, N.Y.)·2026
Same journal

Roots navigate around decay regions by sensing local pH gradients.

Science (New York, N.Y.)·2026

Video Experimental Relacionado

Updated: Jun 29, 2026

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
13:27

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

La plataforma de hielo de Ross las temperaturas del mar las temperaturas del mar.

A E Gilmour

    Science (New York, N.Y.)
    |February 2, 1979
    PubMed
    Resumen

    Los datos oceanográficos de la plataforma de hielo de Ross revelan que la entrada de agua intermedia impulsa el derretimiento del hielo a 360 metros. Este proceso mantiene una temperatura de la capa de hielo basal cerca del punto de congelación ambiental, crucial para la estabilidad de la plataforma de hielo antártica.

    Área de la Ciencia:

    • Oceanografía La oceanografía es la oceanografía.
    • Glaciología glaciología.
    • Investigación en la Antártida Investigación Antártica.

    Sus antecedentes:

    • La plataforma de hielo de Ross es un componente crítico de la capa de hielo de la Antártida.
    • Comprender los procesos basales de la plataforma de hielo es vital para predecir la pérdida de hielo y el aumento del nivel del mar.
    • Estudios previos han sugerido complejas interacciones entre el hielo oceánico y el hielo debajo de las plataformas de hielo antárticas.

    Objetivo del estudio:

    • Para investigar el régimen térmico y las características de la masa de agua debajo de la plataforma de hielo de Ross.
    • Para identificar la fuente de calor que impulsa el derretimiento basal de la plataforma de hielo.
    • Para caracterizar las condiciones oceanográficas en la interfaz hielo-océano.

    Más Videos Relacionados

    Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine
    08:16

    Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine

    Published on: March 13, 2017

    Thermal Limits Determination for Zooplankton Using a Heat Block
    07:16

    Thermal Limits Determination for Zooplankton Using a Heat Block

    Published on: November 18, 2022

    Videos de Experimentos Relacionados

    Last Updated: Jun 29, 2026

    Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
    13:27

    Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

    Published on: June 8, 2015

    Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine
    08:16

    Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine

    Published on: March 13, 2017

    Thermal Limits Determination for Zooplankton Using a Heat Block
    07:16

    Thermal Limits Determination for Zooplankton Using a Heat Block

    Published on: November 18, 2022

    Principales métodos:

    • Desarrollo de un batitermógrafo sensible para registrar perfiles de temperatura.
    • Análisis de datos de temperatura para inferir las condiciones oceanográficas y la transferencia de calor.
    • Mediciones específicas del sitio en el sitio del Proyecto de la Plataforma de Hielo de Ross (82°22.5′S, 168°37.5′W).

    Principales resultados:

    • Se registraron dos perfiles de temperatura distintos, que indican condiciones oceanográficas específicas.
    • La evidencia sugiere una afluencia de agua más cálida a profundidades intermedias.
    • La fusión basal a 360 metros de profundidad fue identificada como un proceso clave, manteniendo temperaturas alrededor de -2.14°C.
    • Se observó una capa bien mezclada de aproximadamente 35 metros de espesor en el lecho marino.

    Conclusiones:

    • La entrada de agua intermedia actúa como una fuente de calor, impulsando el derretimiento basal de la plataforma de hielo de Ross.
    • El régimen de fusión observado es crucial para mantener la estabilidad térmica de la base de la plataforma de hielo.
    • Estos hallazgos mejoran nuestra comprensión de las interacciones hielo-océano en la Antártida y su impacto en la dinámica de la plataforma de hielo.