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TRANSCRIPT
THERMOGRAPHY
REPORT
GOL GUMBAZ,
BIJAPUR, KARNATAKA
Thermography Report
A Thermographic survey was requested by Dharwad Circle, Archaeological Survey of India. The Monuments surveyed was : Gol Gumbaz, Bijapur The survey carried was qualitative in nature. Qualitative thermographic survey relies on analysis of thermal patterns to reveal the existence and locate the position of anomalies, and to evaluate them for further research and investigation.
Client: Dharwad Circle, Archaeological Survey of India
Address: Dharwad
Thermography date: 25th and 26th May, 2012
Location: Gol Gumbaz, Bijapur
Thermographer: ReArk, Bangalore
Outdoor temperature: 39 C
Weather: Sunny
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Contents
1. Plan and 3D View of Gol Gumbaz
2. 3D Model
3. Analysis of each exterior face
1. SOUTH FACE
2. EAST FACE
3. NORTH FACE
4. WEST FACE
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Plan of the Gol Gumbaz, Bijapur
Three dimensional view of Gol Gumbaz, Bijapur; showing the cardinal directions
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fig (a): Left blind arch, south façade
fig (b): Infrared photograph of the same arch
Comments The following images show the presence of hidden architectural features behind the present plasterwork.
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SOUTH FACE
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fig (c): Right blind arch, south façade
fig (d, e): Infrared thermography has revealed a row of possible fenestrations behind the present facade
Comments The following images show the presence of a series of fenestrations behind the present plasterwork. These fenestrations, decorative and arched could have possibly been niches in the 3m thick wall. They are likely to have been filled in at a later stage. Though the building was technically completed in 1656 A.D., decorations were not. After the death of the Sultan, Mohammed Adil Shah, all work on the monument (decorations and fine details) was stopped. Possibly, these fenestrations were incomplete and therefore plastered over to give a neater finish to the mausoleum.
fig (d) fig (e)
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EAST
FACE
fig (f): Left arch, east façade fig (h): Right arch, east façade
fig (g): Infrared thermography has revealed presence of a hidden
fenestration and another material behind the façade
fig (i): Infrared thermography has revealed the presence of another material behind the plasterwork
Comments The following images show the existence of fenestrations behind the façade as well as the presence of a different material embedded in the masonry. This material could have been wood, possibly a part of the original structure of the fenestration.
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fig (j): Left arch, north façade
fig (k, l): infrared thermography of the arch has revealed a hidden fenestration and the presence of another material inside the masonry
Comments The following images show the existence of fenestrations behind the façade as well as the presence of a different material, possibly wood, embedded in the masonry.
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fig (k) fig (l)
NORTH
FACE
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fig (m): Right arch, north façade
fig (n, o, p): thermographic images of the same arch have revealed hidden fenestrations as well as another material present behind the plaster
Comments The following images show the existence of fenestrations behind the façade, which may have been openings to cavities in the 3m thick wall.
fig (o)
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fig (n)
fig (p)
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Comments The following images show the existence of fenestrations behind the façade which may or may not have been true windows. It may have simply been a niche in the wall, covered up later.
fig (q): Left arch, west façade
fig (r): thermographic photography of the arch has revealed possible fenestrations present behind the present façade
WEST FACE
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Comments The following images show the existence of fenestrations behind the façade as well as the presence of a different material, possibly wood, embedded in the masonry. The image also shows the extent of the damage to the thick layer of plaster. This could be because of the orientation of the right arch of this particular wall in the south-west direction.
fig (s): Right arch, west façade; Note the damage to the plaster, possibly due to
weathering
fig (t): Infrared thermography has revealed fenestrations present behind this arch as well as a different material
present in the masonry
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fig (u): Infrared thermography has also revealed the depth of the
cavities caused to the deterioration of the plaster
Recommended Action
This thermographic survey has revealed many hidden features of the monument which were previously unknown. It has also revealed the extent of damage to the southwest arch. This requires further inspection and a thorough thermographic survey is recommended, supplemented with other techniques of investigation.
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