Video Experimental Relacionado
Updated: Jul 12, 2026

08:42
How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters
Published on: April 16, 2015
La erupción del Monte St. Helens del 18 de mayo de 1980: ondas de aire y rendimiento explosivo
Resumen
Las ondas atmosféricas del Monte Santa Helena, detectadas por microbarógrafos y sismógrafos, coincidían con las firmas de las explosiones nucleares. El análisis reveló la erupción de 1980 erupción.
Área de la Ciencia:
- Física de la atmósfera física de la atmósfera.
- Sismología Sismología Sismología.
- Volcanología Volcanología.
Sus antecedentes:
- La erupción del Monte St. Helens en 1980 generó importantes perturbaciones atmosféricas.
- Las ondas de gravedad acústica son perturbaciones que se propagan a través de la atmósfera.
- Los sismógrafos y los microbarógrafos son instrumentos utilizados para detectar el movimiento del suelo y las ondas de presión atmosférica, respectivamente.
Objetivo del estudio:
- Para analizar las ondas acústicas de gravedad atmosféricas generadas por la erupción del Monte Santa Elena.
- Para comparar las firmas de onda con las producidas por grandes explosiones nucleares.
- Para estimar el rendimiento explosivo de la erupción.
Principales métodos:
- Grabación de las ondas de gravedad acústica atmosférica utilizando microbarografías sensibles.
- Grabación de ondas sísmicas mediante el uso de sismógrafos.
- Comparando las firmas de onda registradas con datos teóricos y empíricos de explosiones nucleares.
- Realizar análisis teóricos y empíricos independientes.
Principales resultados:
- Fuertes ondas de gravedad acústica atmosférica fueron detectadas a grandes distancias de la erupción.
- Se encontró que las firmas de onda registradas eran similares a las generadas por grandes explosiones nucleares.
- Los análisis independientes estimaron el rendimiento explosivo de la erupción.
Conclusiones:
- La erupción del Monte St. Helens produjo poderosas ondas de gravedad acústica atmosférica.
- Las características de onda sugieren un rendimiento explosivo comparable a los grandes eventos nucleares.
- El rendimiento explosivo estimado de la erupción fue de aproximadamente 35 megatones.
Más Videos Relacionados
Videos de Conceptos Relacionados
Constant Volume Calorimetry
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
Types of Radioactivity
The most common types of radioactivity are α decay, β decay, γ decay, neutron emission, and electron capture.
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Nuclear Fission
Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large number of different...
Nuclear Transmutation
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...
Radioactivity and Nuclear Equations
Nuclear chemistry is the study of reactions that involve changes in nuclear structure. The nucleus of an atom is composed of protons and, except for hydrogen, neutrons. The number of protons in the nucleus is called the atomic number (Z) of the element, and the sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are isotopes of the same element.
A nuclide of an element has a specific number of protons and...
A nuclide of an element has a specific number of protons and...
Nuclear Stability
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together in the...
To hold positively charged protons together in the...
