Interpretation of gravity and magnetic data with geological constraints for 3D structure of the Thuringian Basin, Germany

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F17%3A43929667" target="_blank" >RIV/49777513:23520/17:43929667 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jappgeo.2016.10.039" target="_blank" >http://dx.doi.org/10.1016/j.jappgeo.2016.10.039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jappgeo.2016.10.039" target="_blank" >10.1016/j.jappgeo.2016.10.039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interpretation of gravity and magnetic data with geological constraints for 3D structure of the Thuringian Basin, Germany

Popis výsledku v původním jazyce

We apply our novel methodology for separation of potential field sources and their 3D inversion to a large area (Thuringian Basin in central Germany). Gravity and magnetic data are separated into long, medium and short wavelengths which are inverted separately. Our main goal is to study uniqueness of the solution and its stability in all steps of the interpretation process and to demonstrate, how geological constraints can diminish degree of non-uniqueness by interpretation of gravity and magnetic anomalies. Our numerical experiments with medium wavelengths show, that if we explain negative anomalies with topography of near-surface layers, the obtained solution is not supported by borehole data. This is why we explain them with restricted bodies (granitic intrusions) at the depths between 4 and 10 km. They are located above a density interface with topography at the depth of approximately 10 km. 3D inversion of magnetic data (short wavelengths) allows investigating of fine structure for the upper boundary of the crystalline basement: two uplifts in the depths between 2 and 0.7 km are found. By using the residual negative anomalies we study salt tectonics: geometry of a salt pillow with the thickness of approximately 200 m is obtained which is in the good agreement with borehole data.

Název v anglickém jazyce

Interpretation of gravity and magnetic data with geological constraints for 3D structure of the Thuringian Basin, Germany

Popis výsledku anglicky

We apply our novel methodology for separation of potential field sources and their 3D inversion to a large area (Thuringian Basin in central Germany). Gravity and magnetic data are separated into long, medium and short wavelengths which are inverted separately. Our main goal is to study uniqueness of the solution and its stability in all steps of the interpretation process and to demonstrate, how geological constraints can diminish degree of non-uniqueness by interpretation of gravity and magnetic anomalies. Our numerical experiments with medium wavelengths show, that if we explain negative anomalies with topography of near-surface layers, the obtained solution is not supported by borehole data. This is why we explain them with restricted bodies (granitic intrusions) at the depths between 4 and 10 km. They are located above a density interface with topography at the depth of approximately 10 km. 3D inversion of magnetic data (short wavelengths) allows investigating of fine structure for the upper boundary of the crystalline basement: two uplifts in the depths between 2 and 0.7 km are found. By using the residual negative anomalies we study salt tectonics: geometry of a salt pillow with the thickness of approximately 200 m is obtained which is in the good agreement with borehole data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

<a href="/cs/project/GA15-08045S" target="_blank" >GA15-08045S: Metody validace, zpracování a použití dat družicových misí v geodézii a geofyzice</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF APPLIED GEOPHYSICS

ISSN

0926-9851

e-ISSN

—

Svazek periodika

136

Číslo periodika v rámci svazku

JAN 2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

35-41

Kód UT WoS článku

000392769700004

EID výsledku v databázi Scopus

2-s2.0-84994744791