Exploring Potential Impact-Induced Magnetic Signatures at the Tunguska Event Epicenter Using UAV-Based Magnetometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10499888" target="_blank" >RIV/00216208:11310/25:10499888 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/25:00385488

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pTGP4TY~Ir" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pTGP4TY~Ir</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2024EA004194" target="_blank" >10.1029/2024EA004194</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Exploring Potential Impact-Induced Magnetic Signatures at the Tunguska Event Epicenter Using UAV-Based Magnetometry

Popis výsledku v původním jazyce

The Tunguska event of 1908 remains the most significant atmospheric explosion in recorded history, yet its geophysical effects, particularly its impact on Earth&apos;s magnetic field, remain uncertain. This study presents the first detailed magnetometer survey of the Tunguska epicenter, aiming to map regional magnetic anomalies and assess potential impact-induced magnetization. The survey used unmanned aerial vehicle and covered approximately 30 square kilometers, revealing a complex pattern of magnetic anomalies that correlate with known geological structures. Notably, some anomalies exhibit spatial alignment with the presumed trajectory of the airburst (~300° azimuth), suggesting potential influence from the event. This spatial correlation raises the possibility that transient electromagnetic effects from the airburst, such as ionization-induced remagnetization or shock-induced changes in magnetic mineralogy, could have contributed to the observed anomaly distribution. However, due to the limitations of our data set, we cannot definitively attribute any observed anomalies to impact-related remagnetization. Our analysis identifies regions where future rock magnetic studies could provide further insights. We discuss possible mechanisms for transient remagnetization, including ionization effects and shock-induced mineral transformations, while emphasizing the necessity of future paleomagnetic sampling to test these hypotheses. These findings establish a foundational geophysical data set for future interdisciplinary investigations into the Tunguska event&apos;s environmental and geological consequences.

Název v anglickém jazyce

Exploring Potential Impact-Induced Magnetic Signatures at the Tunguska Event Epicenter Using UAV-Based Magnetometry

Popis výsledku anglicky

The Tunguska event of 1908 remains the most significant atmospheric explosion in recorded history, yet its geophysical effects, particularly its impact on Earth&apos;s magnetic field, remain uncertain. This study presents the first detailed magnetometer survey of the Tunguska epicenter, aiming to map regional magnetic anomalies and assess potential impact-induced magnetization. The survey used unmanned aerial vehicle and covered approximately 30 square kilometers, revealing a complex pattern of magnetic anomalies that correlate with known geological structures. Notably, some anomalies exhibit spatial alignment with the presumed trajectory of the airburst (~300° azimuth), suggesting potential influence from the event. This spatial correlation raises the possibility that transient electromagnetic effects from the airburst, such as ionization-induced remagnetization or shock-induced changes in magnetic mineralogy, could have contributed to the observed anomaly distribution. However, due to the limitations of our data set, we cannot definitively attribute any observed anomalies to impact-related remagnetization. Our analysis identifies regions where future rock magnetic studies could provide further insights. We discuss possible mechanisms for transient remagnetization, including ionization effects and shock-induced mineral transformations, while emphasizing the necessity of future paleomagnetic sampling to test these hypotheses. These findings establish a foundational geophysical data set for future interdisciplinary investigations into the Tunguska event&apos;s environmental and geological consequences.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Earth and Space Science

ISSN

2333-5084

e-ISSN

2333-5084

Svazek periodika

12

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

e2024EA004194

Kód UT WoS článku

001530255800001

EID výsledku v databázi Scopus

2-s2.0-105011284613