https://www.historic-landscapes.org/our-projects daily 0.75 2019-05-11 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557005511507-JYH7JPPASM7A2KVEBC3B/fishing-stages-lib-arch-can.jpg Our Project Temporary structures- wooden fish drying platforms that would have collapsed every year, and stage structures built out of wood and roofed with ship’s sails, which would have been abandoned every year and taken the brunt of sea ice and wave action. Library and Archives Canada, Ref. No. PA-202290 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557006576870-MJZMUGKDSGROWUL4HQWM/fishery.jpg Our Project These were ephemeral occupations because they were transient and seasonal. Nevertheless, the same places were used repeatedly, as the documentary record indicates. A good beach to dry fish 500 years ago was a good place 50 years ago. Five centuries of building small, impermanent shoreside structures, as seen in this mid 19th century photo had an impact on the shape of the contemporary landscape. Library and Archives Canada, Mikan no. 3574464 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557007062804-07YH136QSQZPN2TIZ677/abandoned-site.PNG Our Project The indicated stand of plants rise abruptly from the surrounding meadow in a geometrical pattern. Closer inspection revealed that this square marked the debris pile from a collapsed 20th century house. Growing out of this debris pile was a stand of Fallopia japonica, or Japanese knotweed. This is an invasive species that thrives in disturbed areas and once established, can spread rapidly. By mimicking the shape of the collapsed house, it reminds us that plants can reflect anthropogenic origins. This collapsed house was subsequently identified in a mid 20th century aerial photo to the right, which corresponds perfectly with the shape of knotweed growth in this location. Image copyright A. Crompton and M. Bolli, 2011. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557006429104-PW3GH2S5UIKLGF5S7H7T/dried-fish.jpg Our Project Some work of fish drying took place directly on cobblestone beaches. This served to create soil, and enrich it with phosphorus, nitrogen, and calcium. Over five hundred years, not only was the landscape changed in subtle ways, but also the chemical composition of the soil itself was altered. Library and Archives Canada, Ref. No. PA-202293 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557007562731-T5XVEA93Q5GYXWJAPHVJ/bw-aerial-cropped.png Our Project The mid 20th century aerial image clearly shows the rectangular structure coinciding neatly with the knotweed growth in the image to the left. Image credit: Government of Newfoundland and Labrador. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557008461057-NLNP7WW4AY2G14QK1PP0/cropmarks2.jpg Our Project Image credit: Creative Commons https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557064117373-U7HQ4SBYVJEGYBUCNOUD/Google-NL.PNG Our Project Newfoundland’s Northern Peninsula is a location rich in former historic french fishing sites. But Cremaillere harbour among, other sites in the indicated rectangle above, stands out as an ideal research location. Many sites were abandoned by the French and rarely re-occupied. This region provides the ideal field laboratory to test our methodologies. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557010829187-8EXIEVJ541SC0NC5MSZQ/map-overview.png Our Project Our current investigations are concentrated on the Island of Newfoundland (the island highlighted in blue). https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557011312395-60L9XT5X10HYPRL7CQLZ/CRE-galet.png Our Project Remnants of a cobblestone galet used for drying fish, now completely overgrown. Image copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557008400351-YYHCX9BMXIQO4VSOKE3U/cropmarks1.gif Our Project Image credit: Creative Commons https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557064927108-2WBDED6B0O0BPABXWBI5/CRE-anomaly2.jpg Our Project An anomalous patch of vegetation which indicates an archaeological feature. Image copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557067247732-RTF100DJSRPPX1FYS3VI/site-overview-grouond.jpg Our Project The location of a former French fishing site on the Northern Peninsula. Image copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557068213936-WUFQY8JYI0XK4SWDMJ1Q/aerial-site-overview-Capture.PNG Our Project Aerial panorama view of an archaeological site in Cremaillere harbour. Image copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557069551645-RUF3IFHA3EIOEMIWB91F/orthomodel-sm.png Our Project Partial view of a cartographically correct orthomosaic model derived from hundreds of aerial imagery tiles, rendered into data points using photogrammetric software. Image copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557070161157-FAB6MX10S47K0J9P0TWM/image-asset.png Our Project A DJI MAvic UAV with multispectral sensor attached, in flight. Image copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557004377960-BLPQKFRJ1E44GX13DMV8/dried-fish.jpg Our Project https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557005468248-8D4UX5OH2OTEHB7EOJB8/fishery.jpg Our Project https://www.historic-landscapes.org/about-us daily 1.0 2019-05-11 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1556981781694-4ZOG473CQKOY5ZXKP76Q/20180718_122604_HDR.jpg About Us https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1556987197272-WZC9XHM38SKN37C7YF3H/CRE-scenery.jpg About Us https://www.historic-landscapes.org/our-team daily 0.75 2022-03-30 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557433326091-ENXCYBURT6WMY0DD8O4M/Picture2.png Our Team https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557433115188-43Z7Z8I2CNN8F3KK4T5J/Picture1.png Our Team https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1556984428735-YQ735GL5FYMOXK03TB8I/MB.png Our Team Marc https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557433413210-S14X03X7SBYSOOC58HVC/Picture6.png Our Team https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557433567419-98KN7D21URJE78LC1KCB/Picture7.png Our Team https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557433466245-IMNH0ZIJ5THUUZU9W867/Picture3.png Our Team https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1556984846715-MZPEOX7WUSVNUE02OL3H/AcademiaProfilePicsm.jpg Our Team Amanda Cr https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557433617765-70R67YP3HU4U7GF4DAOG/Picture5.png Our Team https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557433512792-45TNRY1HIG9V0U7QJB2Z/Picture4.png Our Team https://www.historic-landscapes.org/contact-us daily 0.75 2019-05-08 https://www.historic-landscapes.org/method daily 0.75 2019-05-16 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557316548193-AFXXJATHTVDRHO41QHIP/conclusions.PNG Methodologies https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557153102275-8CYAUHQFTAUDE38H7MHV/survey-tiles-small.png Methodologies An example of UAV survey tile exposure position overlaid onto a dense point cloud photogrammetric representation of a archaeological site. Ideally you want even spacing between tile exposures that are NADIR to the survey surface and evenly spaced aerial transects. Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557315470112-LUGZOS3KVSQNVM2ZK3HD/spectral-absorption.png Methodologies Spectral absorption curve for chlorophyll. Image credit: MapIR guides. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557230691362-HYUYM7DYV6F6MNAX7DGH/dense-cloud.png Methodologies An example of a dense cloud made up of around 40 million points. One can already recognize many features of the survey site. Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557313366683-ZUM0LBS1EG1EEFL8ED5W/HPC-systems.png Methodologies A data centre with racks of high performance computing systems. Image courtesy The CREAIT Network, Memorial University. Image Copyright: A. Crompton & M. Bolli, 2017. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557234047587-2A7ZCJ05Q4DCCLK9472T/tile-overlap.png Methodologies Always build in checks for survey tile acquisition overlap. Insufficient overlap and side-lap, can introduce “holes” in your data set. At best these show up as areas with no data in the results, at worst they can generate image artifacts that may lead to erroneous site interpretation. Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1558010666661-5XLBXYBALB6LXT6BU8TR/SE_P-slide-21.jpg Methodologies SEM-MLA elemental analysis on a targeted component in a SEM micrograph filtered for surface (bio-available) Phosphorous only. Copyright: A. Crompton & M. Bolli, (2018). Analysis courtesy of CREAIT Network MLA laboratory. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557234622517-O9P214INNZS51A2JA83D/reflectance-calibration.jpg Methodologies An example of a reflectance calibration target from MapIR. Designed for a speciific sensor, these targets allow calibration at time of survey flight so that we measure our reflectance values against standards. This allows us to calibrate each pixel to a known reflectance value. Source: Mapir. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557315119762-CIGA89PACEFOU7R7JIUT/NDVI.png Methodologies https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557999038632-07Z5FI3RN2H68RLDK4AX/s2-elemental-map-slide20.jpg Methodologies SEM-MLA elemental analysis on a targeted component in a SEM micrograph. Image Copyright: A. Crompton & M. Bolli, (2018). Analysis courtesy of CREAIT Network MLA laboratory. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557177602455-OOPY7NC75N8SB0XDSSRX/sparse-cloud1.png Methodologies A representation of a sparse point cloud of an archaeological site with ground control points (GCPs). Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557086381554-6926T8J5ZTXQJRZL9MJ0/X8.jpg Methodologies A 3DR X8 UAV taking off for a survey. This older and larger robot has been replaced by much smaller, more accurate and more maneuverable craft such as the DJI Mavic Pro. Image Copyright: A. Crompton & M. Bolli. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557155394450-IUUKSP9LE5O8LHELV50I/GNSS.PNG Methodologies To achieve centimetre grade accuracy in survey models, conventional GPS is insufficient. We use survey grade GNSS equipment, often referred to as RTK (real time kinematic) to mark ground control points (GCPs). This is done using a base station and a roaming Global Navigation Satellite System (GNSS) unit. These extremely precise location measurements can be incorporated into the model mapping process. Because we add the points after the survey flight, this approach is technically called Post Processed Kinematic (PPK). Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557234277514-J370VGA65GMI4PXQ6MQ2/lens-calibration.png Methodologies It is essential to calibrate for lens effects when processing data. Un-calibrated data can easily lead to lens aberrations that introduce artifacts into the computation or results. This can lead to misinterpretations of survey data. Most professional photogrammetry software includes modules to calibrate and correct for lens and electronic shutter effects. Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557231462494-UQWHV4EGCKP4F3FSUJH0/orthomodel-sm.png Methodologies A full orthomosaic model of a survey site. Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557316187653-SY2QBFXPGO3RUGGEEU8O/NIR-LUT.png Methodologies An example of a false colour coded NDVI index image. This orthomosaic, derived from a multispectral series of UAV acquired image tiles, shows healthier photosynthetic activity in green and poorer in red. The greenest index also corresponds roughly to historic fishing sites. of this area. Image Copyright: A. Crompton & M. Bolli, 2019. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557230825147-99X4B1J9M69FY72SADGL/dem.png Methodologies Example of a Digital Elevation Model (DEM) derived from location data and the dense point cloud. Image Copyright: A. Crompton & M. Bolli, 2018. https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557072954133-4T76XGQHJ4OGYHRLMO1S/method-composite.png Methodologies https://www.historic-landscapes.org/faq daily 0.75 2019-05-09 https://images.squarespace-cdn.com/content/v1/5b5884d8620b851c8ea3c33f/1557406320745-PZNLOX1X0WCKE5GTRISQ/abandoned-landscapes-sm.jpg FAQ https://www.historic-landscapes.org/privacy-policy daily 0.75 2019-05-09