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  Earth Magnetic Anomaly Grid 1:35,000,000 (2 arc-minute resolution) (EMAG2)

A global Earth Magnetic Anomaly Grid (EMAG2) was compiled from satellite, ship and airborne magnetic measurements. (Maus et al., 2009) Over the continents and the Arctic we made use of exisiting magnetic anomaly grids, whereas original ship and airborne trackline data were processed over the rest of the oceans, wherever available. CHAMP satellite magnetic measurements provided the magnetic field at wavelengths above 330 km. The EMAG2 grid is available at http://geomag.org and http://ngdc.noaa.gov. Directional gridding Due to the sparsity of magnetic field measurements in the southern oceans, it is necessary to interpolate the magnetic field between tracklines. Our interpolation algorithm takes the direction of the magnetic lineations into account. Tje lineations are parallel to the isochrons, which are perpendicular to the gradient of the age of teh oceanic crust. We use the age grid of Müller et al. (2008). The magnetic field ad a given grid point is computet by Least Squares Collocation from the surrounding measurements. If the point is on land, we use an isotropic correlation function with Rc = 14 km correlation length. Over the oceans we use Rc = 56 km parallel to the isochrons and Rc = 14 km in the spreading direction. Measurements seperated from the grid point by an age discontinuity or a topographic feature are excluded from the collation.
 
Citation proposal
(2010) . Earth Magnetic Anomaly Grid 1:35,000,000 (2 arc-minute resolution) (EMAG2). https://gdk.gdi-de.org/geonetwork/srv/api/records/CF387546-B217-43D3-8781-8BEF8250253B
 

Simple

Alternate title
EMAG2
Date ( Publication )
2010-11-10
Edition
1. Auflage
Identifier
B3CCFEA1-9E87-4593-B4AB-6D441AA752C1

  Author

Barckhausen, U. et al.  

  Author

Maus, S.  
Status
completed Completed

  Point of contact

Bundesanstalt für Geowissenschaften und Rohstoffe - Barckhausen, Udo, Dr.  
Stilleweg 2 Hannover 30655 DE

GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Geologie
GEMET - Concepts, version 2.4 ( Theme )
  • geophysics
  • Geophysik
Keywords ( Theme )
  • Earth magnetic field
  • Erdmagnetfeld
  • Weltkarte
  • world map
Keywords ( Place )
  • Weltweit
Access constraints
Other restrictions
Use constraints
Other restrictions
Other constraints
Allgemeine Geschäftsbedingungen, s. https://www.bgr.bund.de/agb - General Terms and Conditions, s. https://www.bgr.bund.de/agb_en
Other constraints
Preis der gedruckten Karte: 13,83 EUR (zzgl. 7% MWSt. und Versandkosten) Weitere Informationen zur Bestellung beim Internationalen Landkartenhaus siehe https://www.bgr.bund.de/produktcenter-bestellhinweis-ILH
Spatial representation type
Grid
Denominator
35000000
Metadata language
eng English
Character set
utf8 UTF8
Topic category
  • Geoscientific information
N
S
E
W


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  • JPEG (n/a )

  • TIFF (n/a )

  • gedruckt (n/a )

Transfer size
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EMAG2 (PDF)  

EMAG2 im Format Adobe Acrobat Datei (geringe Auflösung)

Transfer size
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EMAG2 (JPEG)  

EMAG2 im Format JPEG (Auflösung 150 dpi)

Transfer size
68
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EMAG2 (TIFF)  

EMAG2 im Format TIFF (Auflösung 300 dpi)

OnLine resource
EMAG2 (gedruckt)  

EMAG2 im Format gedruckt, gefalzt

OnLine resource
EMAG2-Projekt im Internet - EMAG2-Project-Website  

EMAG2-Projekt im Internet - EMAG2-Project-Website

Hierarchy level
Dataset
Statement
Daten: NOAA, Boulder, CO, USA. Referenz: Maus, S., U. Barckhausen, et al. (2009), EMAG2: A 2-arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and ... , Geochem. Geophys. Geosyst., 10, doi: 10.1029/2009GC002471 - Data: NOAA, Boulder, CO, USA. Reference: Maus, S., U. Barckhausen, et al. (2009), EMAG2: A 2-arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and ... , Geochem. Geophys. Geosyst., 10, doi: 10.1029/2009GC002471

gmd:MD_Metadata

File identifier
CF387546-B217-43D3-8781-8BEF8250253B   XML
Metadata language
English
Character set
utf8 UTF8
Hierarchy level
dataset Dataset
Hierarchy level name
Geophysik
Date stamp
2025-02-12
Metadata standard name
INSPIRE Metadata Implementing Rules: Technical Guidelines based on EN ISO 19115 and EN ISO 19119
Metadata standard version
n/a

  Point of contact

Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)  

Website
http://www.bgr.bund.de  
 
 

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