For quantitative landscape analysis on a sugar producing caribbean island
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for quantitative landscape analysis on a sugar producing Caribbean island. Accuracy and quality issues in using historical maps. Niels Chr. Nielsen, post doc. at Center for Tourism, Innovation and Culture, SDU-Esbjerg:. [email protected] +45 6550 1582.

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Accuracy and quality issues in using historical maps

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For quantitative landscape analysis on a sugar producing caribbean island

for quantitative landscape analysis on a sugar producing Caribbean island

Accuracy and quality issues in using historical maps

Niels Chr. Nielsen, post doc. at Center for Tourism, Innovation and Culture, SDU-Esbjerg:

[email protected] +45 6550 1582


Background centre for maritime and regional studies cmrs at sdu esbjerg

Background: Centre for Maritime and Regional Studies (CMRS) at SDU-Esbjerg

  • CMRS studies the interaction of the oceans and human society. With expertise from historians, archaeologists, ethnologists, and social anthropologists, our research explores the interaction between humans and the sea from the earliest times to the Present.

  • Example projects

  • ”Digital Atlas of Cultural Environments in Denmark”,

  • History of Marine Animal Populations (Census of Marine Life),

  • Digital Mobile Nature- and town walks,

  • Studying the controversy about the national park at Salt River Bay, St. Croix

  • Supporting the developement of a national park in the Danish Wadden Sea area

  • Main theme for the ”St. Croix in past and present” Galathea3-project: Sustainability

  • read more at www.cmrs.dk


A bit about sankt croix

a bit about Sankt Croix

http://cas.umkc.edu/StCroix/orientation.htm


Land use and land cover

Land use and land cover

  • Land use:

  • The way in which, and for the purposes of which,

  • human beings employ the land and its resources.

Land cover:

The physical state of the land surface.

from Meyer 1995:

Meyer, W.B. 1995. Past and present land use and land cover in the USA. Consequences 1, 1: 24-33


Land use and land cover in a wider context

Driving forces

Social context

Land use and land cover in a wider context

Climate Change

(modification)

Land Cover #2

(physical maintenance)

Land Cover #1

Land Cover #3

(change)

(conversion)

(maintenance)

Proximate sources

Land Use #1

Land Use #2

envt. impacts on Driving Forces

From Ojima, Galvin and Turner (1994) and Turner, Skole and Moss (1993)


View from above

View from above

St. Croix seen from the International space station (ISS), altitude 400 km, 2001.


Climate

Climate

NE trade winds, quite constant over the year


First known map of st croix

First known map of St. Croix

French, Lapointe 1671. NB: SSE up.


The quarters of st croix

The “quarters” of St. Croix.

  • Coastline, borders and towns digitised from Oxholm’s map


Cronenberg and j gersberg s map compiled 1749 50

Cronenberg and Jægersberg’s map, compiled 1749-50

Drawn at scale appx. 1:30.000

Photograph: Daniel Hopkins, with permission, from

http://cas.umkc.edu/StCroix/mapping/cronenberg.htm


P l oxholm a key figure in the mapping of st croix in the late 18 century

P.L. Oxholm, a key figure in the mapping of St. Croix in the late 18. century

(1753 – 1827, general governor 1815-16)‏


Oxholms topographic map of st croix

Oxholms “topographic” map of St. Croix

  • Measured/compiled around 1794, printed in Copenhagen 1799, at a scale of app. 1:60.000

From Daniel Hopkins: http://cas.umkc.edu/StCroix/mapping/framesetOxholm.htm


Subset of the cronenberg jaegersberg map 1750

Subset of the Cronenberg-Jaegersberg map 1750

  • Note plot numbering


Subset of oxholm 1794 map

Subset of Oxholm 1794 map


Legend from the 1750 c j map

“Legend” from the 1750 C-J map


Digitising to vector format building data structure

Digitising to vector format, building data structure:


Gcps and geo referencing

GCPs and geo-referencing


Digitised data

Digitised data


Subset of georeferenced c j map

Subset of Georeferenced C&J map

with digitised features: plantation/plot outlines from Oxholm’s map (bold lines)


Subset of georeferenced oxholm s map

Subset of georeferenced Oxholm’s map

  • With plot outlines from the C & J map


Land cover time series

Land cover time series:

Cronenberg 1749

..Oxholm 1794

..Shaw 1933

& UVI 1999


Land cover statistics from maps

Land Cover Statistics from maps

jump to conclusions


Spatial aspect of the change matrix

Spatial aspect of the “change matrix”


Main soil associations on st croix

Main soil associations on St. Croix

  • with registered positions of plantation (great) houses 1750, also showing digitized outline of quarters from Oxholm’s map.

jump to conclusions


Castle nugent south coast with gps registrations

Castle Nugent, south coast, with GPS registrations


Gps measurements around north star plantation

GPS measurements around North Star plantation


Store salt panne in google perspective

Store Salt Panne in Google perspective


Terrain slope on sankt croix

Terrain slope on Sankt Croix

from USGS terrain model, measured in per cent


Viewpoints and hiding places on st croix 1748

Viewpoints and hiding places on St. Croix 1748

Calculated in GIS from Digital Terrain model, numbers show how many great housesa given point can be seen from (excl. vegetaion)


Product maroon sites

Product: ”maroon sites”


Maroon ridge in birds perspective

Maroon Ridge in birds perspective


Exploration at maroon ridge 27 3 07

Exploration at Maroon Ridge 27/3’07


Conclusions

Conclusions

- We can get some of the way following the historical maps approach

  • Time to think integration with other databases (VISHA)

  • Work in progress: still cell-based modelling to be considered. Socio-economic as well as environmental.

- To wonder: are the map data of use, any added value by having the spatial dimension along with the statistical? GIS relevant as integrating reference for historical information at this level?

Thank you very much.


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