NYU Spatial Data Repository

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1321. Magnetic Field - Secular Variation of the Declination Component for the Epoch 2010.0

2010. National Geophysical Data Center. This map layer shows isoporic lines (lines of equal annual change, or secular variation, in the declination of the Earth's magnetic field), derived... National Atlas of the United States.

1322. Magnetic Field - Secular Variation of the Horizontal Component of the Total Field Intensity for the Epoch 2010.0

2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation) in the horizontal component of the total field intensity of the Earth's ... National Atlas of the United States.

1323. Magnetic Field - Secular Variation of the Inclination Component for the Epoch 2010.0

2010. National Geophysical Data Center. This shapefile shows lines of equal annual change (secular variation) in the inclination of the Earth's magnetic field, derived from the Internatio... National Atlas of the United States.

1324. Magnetic Field - Secular Variation of the Total Field Component for the Epoch 2010.0

2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation), in the total field intensity of the Earth's magnetic field, derived fro... National Atlas of the United States.

1325. Magnetic Field - Secular Variation of the Vertical Component of the Total Field Intensity for the Epoch 2010.0

2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation) in the vertical component of the total field intensity of the Earth's ma... National Atlas of the United States.

1326. Magnetic Field - Total Field Intensity for the Epoch 2010.0

2010. National Geophysical Data Center. This shapefile contains isodynamic lines (lines of equal total intensity of the Earth's magnetic field), derived from the International Geomagnetic... National Atlas of the United States.

1327. Magnetic Field - Vertical Component of the Total Field Intensity for the Epoch 2010.0

2010. National Geophysical Data Center. This line shapefile shows lines of equal vertical intensity of the Earth's magnetic field, derived from the International Geomagnetic Reference Fie... National Atlas of the United States.

1328. Map of British Columbia reduced from the original map

Waddington, Alfred Penderill, 1801-1872. Relief shown by hachures and spot heights. Forest and soil resources shown by text and shading. Wagon roads, trails and explored routes shown in Br... London: published for the Journal of the Royal Geographical Society by J. Murray, Albemarle Street, 1868.

1329. Map of Hudson Bay and part of the Dominion of Canada to accompany the paper by Robert Bell, M.D., F.G.S., Assistant Director of the Geological Survey of Canada. Compiled from the latest surveys

Sharbau, H. (Henry). Depth shown by soundings. Relief shown by hachures and spot heights. Forts on Hudson Bay, in Dominion of Canada, and in Dakota Territory are shown.... London : Edward Stanford, 1881.

1330. Map of the discoveries and route of the Arctic Land Expedition in the years 1833 & 1834

Back, George, Sir, 1796-1878. Relief shown by hachures and spot heights. From: the Journal of the Royal Geographical Society of London. Vol. 6, (1836), pp. 1-11; held in Firesto... London : published for the Journal of the Royal Geographical Society, by John Murray, Albemarle Street, 1836.