Stock Image

The Hemispherical Magnetic Field of Ancient Mars

Wieland Dietrich

Published by Uni - Edition Gmbh Jan 2013, 2013
ISBN 10: 3942171708 / ISBN 13: 9783942171700
New / Buch / Quantity Available: 2
From Agrios-Buch (Bergisch Gladbach, Germany)
Available From More Booksellers
View all  copies of this book
Add to basket
List Price:
Price: £ 50.43
Convert Currency
Shipping: £ 15.28
From Germany to U.S.A.
Destination, Rates & Speeds

Save for Later

About the Book

Bibliographic Details

Title: The Hemispherical Magnetic Field of Ancient ...

Publisher: Uni - Edition Gmbh Jan 2013

Publication Date: 2013

Binding: Buch

Book Condition: Neu


Neuware - The measurements of the Martian crustal magnetization by the Mars Global Surveyor spacecraft revealed a characteristic equatorial dichotomy. Strong magnetic anomalies are found exclusively in the southern hemisphere, whereas the north is nearly devoid of any magnetization. The strong magnetization might attest the presence of an ancient Martian core dynamo, but to explain the hemispherical distribution is rather challenging. Here we study, whether it is possible to modify a core dynamo such that the magnetic field at the surface matches the crustal magnetization in amplitude and equatorial dichotomy. Taking the thermal state of the ancient Martian interior into account, we enforce hemispherical dynamos by applying a sinusoidal anomaly to the core mantle boundary heat flux. We show in detail, how convection and magnetic induction are affected by the boundary forcing. Furthermore, we investigate the dependence on model parameters and boundary conditions. The core mantle boundary heat flux anomaly consistently triggers a thermal wind dominated dynamo mode that induces a magnetic field confined to one hemisphere. Interestingly, all dynamo solutions that match the crustal hemisphericity show fast and regular oscillations including polarity inversions. We analyze if and how such a hemispherical magnetic field can be translated into a crustal magnetization pattern and conclude that the fast magnetic cycles are incompatible with the slowly acquired crustal magnetization. The special symmetries of flow and magnetic field in the boundary forced hemispherical dynamos allow us to compare the cycle periods to Parker waves, where we find a surprisingly good agreement. 172 pp. Englisch. Bookseller Inventory # 9783942171700

Bookseller & Payment Information

Payment Methods

This bookseller accepts the following methods of payment:

  • American Express
  • Bank/Wire Transfer
  • Check
  • Invoice
  • MasterCard
  • PayPal
  • Visa

[Search this Seller's Books]

[List this Seller's Books]

[Ask Bookseller a Question]

Bookseller: Agrios-Buch
Address: Bergisch Gladbach, Germany

AbeBooks Bookseller Since: 11 January 2012
Bookseller Rating: 5-star rating

Terms of Sale:

Allgemeine Geschäftsbedingungen (

der Firma Agrios Buch- und Medienversand UG e.K. ,Geschäftsführer Ludwig Meier, De-Gasperi-Str. 8, 51469 Bergisch Gladbach nachstehend als Verkäufer bezeichnet.

§ 1 Allgemeines, Begriffsbestimmungen

(1) Der Verkäufer bietet unter dem Nutzernamen Agrios Buch unter der Plattform insbesondere Bücher an. Die folgenden Allgemeinen Geschäftsbedingungen (AGB) gelten für die Geschäftsbeziehung zwischen dem Verkäufer und dem Kunden in ihrer zum Ze...

[More Information]

Shipping Terms:

Der Versand ins Ausland findet IMMER mit DHL statt. Auch nach Österreich verschicken wir nur mit DHL! Daher Standardversand == Luftpost!

Detailed Seller Information