Conversations in Caves

Leonardo ◽  
2020 ◽  
pp. 1-9
Author(s):  
Flora Parrott ◽  
Harriet Hawkins
Keyword(s):  
Field Work ◽  
A Site ◽  
Time Of Failure

This paper takes the form of a discussion between Flora Parrott (an artist) and Harriet Hawkins (a geographer) who first brought together their existing interests in caves and the underground in 2015. Gully Cave, a site of their shared “field-work” and two experimental workshops offer the chance to reflect on their evolving work together. This exchange, edited from a series of emails, has the sort of evolving, looping form their collaboration has taken, circling around key themes including; the importance of time, of failure and trust in the process of development and discussions around expertise and experimentation.

A Translucent Shelter for Field Work in Regions with High Precipitation

1950 ◽  
Vol 15 (3) ◽  
pp. 252-252
Author(s):  
Charles E. Borden
Keyword(s):  
North Pacific ◽  
Pacific Coast ◽  
Field Work ◽  
University Of British Columbia ◽  
The North ◽  
Archaeological Work ◽  
High Precipitation ◽  
A Site ◽  
The University ◽  
The North Pacific

Heavy and frequent rainfall is a serious obstacle to archaeological work on the North Pacific Coast. Exposure to many days and perhaps weeks of rain may impair the health of the field party and will inevitably dampen the morale of individual members. Rain causes delays, makes the midden material soggy and difficult to work, may collapse the trench walls, and brings numerous other major and minor headaches in its wake.Last spring a group of anthropology students from the University of British Columbia, working under my direction at a site in the Vancouver area, tested the practicability of a simple shelter, designed to give adequate protection during wet weather and to admit sufficient light for all operations.

scholarly journals Interactive virtual fieldtrip as a tool for remote education

2021 ◽  
Author(s):  
Niki Evelpidou ◽  
Anna Karkani ◽  
Apostolia Komi ◽  
Aikaterini Giannikopoulou ◽  
Maria Tzouxanioti ◽  
...  
Keyword(s):  
Aegean Sea ◽  
Field Work ◽  
Field Trip ◽  
Field Trips ◽  
Virtual Field Trips ◽  
Advantages And Disadvantages ◽  
Area Of Interest ◽  
Virtual Field ◽  
Actual Field ◽  
A Site

Abstract. Geoscience courses, such as geology and geomorphology, require not only classroom lessons and laboratory exercises, but field trips as well. However, the COVID-19 restrictions did not allow the prosecution of most planned field trips, and an alternative needed to be developed. The use of virtual field trips is one such alternative. Through them, one can not only visit any area of interest, but prepare themselves for any actual educational or exploratory field trip as well. Even though they do not, and should not, substitute any physical visit of a site of interest, they have many advantages when combined with a "live" field work, in comparison to a field trip for which no preparation has been made. Through this research, we compare the advantages and disadvantages of both virtual and real educational field trips based on the opinions of our students. We thus performed a virtual navigation on the island of Naxos, Cyclades (Aegean Sea, Greece) for a series of virtual field trips, which took place during webinars in the framework of Erasmus+ CIVIS. The virtual fieldtrip was also presented to the third-year students of the Faculty of Geology & Geo-environment, National and Kapodistrian University of Athens, in the framework of the obligatory course of Geomorphology. Upon completion, all participating students were asked to fill in a questionnaire in order to evaluate the contribution of virtual field trips to their education regarding geomorphology and state their opinion as to whether they can supplement and/or substitute actual field trips. Most of them stated that virtual field trips can aid, but not substitute the actual field work. Most students mentioned that they would attend another virtual field trip in the future, both as an alternative to classroom lessons and as a means of preparation for an actual field trip, but not in order not to attend the actual one.

Identifying past rockfall trajectories and runout distances from detailed 3D terrain model: The case of the Mel de la Niva mountain, Switzerland.

2020 ◽  
Author(s):  
François Noël ◽  
Synnøve Flugekvam Nordang ◽  
Michel Jaboyedoff ◽  
Marc-Henri Derron
Keyword(s):  
Risk Mitigation ◽  
Field Work ◽  
Mitigation Measures ◽  
Terrain Model ◽  
Ambient Occlusion ◽  
3D Terrain ◽  
Other Information ◽  
Rockfall Simulation ◽  
A Site ◽  
Inspection Task

<p>When planning for the implantation of transport infrastructures or buildings, it is necessary to identify the land zones that can be reached by rockfalls. These zones should then be avoided if possible, or stabilisation and risk mitigation measures must be considered. 3D preliminary rockfall simulations can be used to help finding the areas where inspections should be prioritised. Using orthophotos, a detailed shaded representation of the terrain and field work, geologists can then note the position of the deposited blocks and sources from past events, among other things. Collecting this information can however be complex, and the blocks can sometimes be mistaken for glacial deposits.</p><p>To increase the accuracy of this inspection task, the land can be analysed using a 3D detailed terrain model with artificial colors based on its aspect orientation and slope steepness and artificial shadows based on the ambient occlusion and eye dome lighting methods. Scars left by past rockfall events are then highlighted and some trajectories can be reconstituted. This method can help isolating identified rockfall deposited boulders from erratic blocks and help finding where is the source from. It can also draw attention to the location where a block has settled by showing parts of its trajectory. A relative aging can also be attributed based on the sharpness of the scar edges, with older events appearing smoother or partly erased. This can help estimating the activity of the site when no other information is known.</p><p>We applied this method to the Mel de la Niva site in Switzerland while analysing the two main rockfalls from the 2015 event. The 3D model used was created from SfM photogrammetry using pictures acquired on the field by manually flying a DJI Phantom 4 drone over the terrain. The method allowed to identify 1 rockfall that followed the main 2015 event and 7 rockfalls that preceded it, which is quite interesting. Indeed, if activity is observed on a site, inspection of the source cliff should be done to try to identify if a larger event is about to occur.</p><p>These identified rockfalls trajectories were validated using a time series of available orthophotos from SWISSIMAGE. Two paths were present before the oldest photo from 1983. Three appear on the 1999 photo. They then happened in between the previous photo from 1995 and the 1999 one. One happened in between the 1999 and 2005 photos. One happened in between the 2010 and 2013 photos and one in between the 2016 and 2017 photos.</p><p>The 8 identified trajectories combined with the 2 from 2015 also have an interesting shape. They tend to not directly follow the steepest path of the terrain. This behavior seems to be frequent, especially when the blocks are disk-shaped, and it has also been observed and partly quantified from the rockfall experiment we presented here last year (2019). Data from the Mel de la Niva site has been added to our rockfall database and it will used for the calibration and further developments of our rockfall simulation model.</p>

Mississippian Specialization and Salt

1984 ◽  
Vol 49 (3) ◽  
pp. 489-507 ◽  
Author(s):  
Jon Muller
Keyword(s):  
Field Work ◽  
Southern Illinois ◽  
Salt Production ◽  
Production Site ◽  
Actual Field ◽  
A Site ◽  
Made In

Despite a tendency to treat Mississippian production as involving specialization, little effort has been made to test these proposals in actual field work. A distinction between specialization at a site and specialization of producers is made in this article and applied to materials from the Great Salt Spring, a Mississippian salt production site in southern Illinois. Testing and excavations in 1981 and 1982 show that this was a true limited activity site. Nonetheless, the data on producer organization do not strongly support the conclusion of specialist production there and are consistent with simpler models of non-specialist production.

scholarly journals Exploring the Utility of Bathymetry Maps Derived With Multispectral Satellite Observations in the Field of Underwater Archaeology

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Radoslaw Guzinski ◽  
Elias Spondylis ◽  
Myrto Michalis ◽  
Sebastiano Tusa ◽  
Giacoma Brancato ◽  
...  
Keyword(s):  
Satellite Data ◽  
Field Work ◽  
First World War ◽  
Archaeological Sites ◽  
Underwater Archaeology ◽  
World War ◽  
Optimal Allocations ◽  
Satellite Bathymetry ◽  
A Site ◽  
First World

AbstractBathymetry maps derived with satellite-based multispectral sensors have been used extensively for environmental and engineering coastal studies and monitoring. However, so far this technique has not been widely exploited in other coastal applications, such as underwater archaeology. Submerged settlements and shipwrecks are often located in water depths where the application of multispectral satellite data is feasible. This could lead to more efficient field work practices thus enabling more optimal allocations of costs and labour during archaeological excavations. This study explores the contribution of processed satellite bathymetry maps to the recording of two archaeological coastal sites: a submerged prehistoric settlement in Greece and a shipwreck of a modern cargo vessel in Italy. The results indicate that even though the accuracy of satellite derived bathymetry is high, the level of detail (spatial resolution) is not sufficient to fully replace field-based measurements. However, the use of satellite data complements the existing techniques and can help to place the archaeological sites within a broader spatial context as well as to efficiently monitor the deterioration of a site due to natural causes or human activity, which inevitably leads to risk management. When the study of larger objects is involved (for example First World War shipwrecks) the potential of using satellite data in underwater archaeological studies becomes more promising.

The Construction and Uses of a Laboratory Archaeological Site

1964 ◽  
Vol 29 (3) ◽  
pp. 328-337 ◽  
Author(s):  
John H. Chilcott ◽  
James J. Deetz
Keyword(s):  
Junior High School ◽  
Archaeological Site ◽  
Field Work ◽  
Small Scale ◽  
Santa Barbara ◽  
Field Instruction ◽  
Student Groups ◽  
Great Utility ◽  
A Site ◽  
The University

AbstractIn view of the demonstrated value of small-scale site replicas to archaeological field training, a full-scale experimental site was constructed and shown to be of value in training personnel in archaeological techniques and in investigating various problems of archaeological field procedure. This site, built on the Santa Barbara campus of the University of California, was excavated by student groups ranging from junior high school through college who had differing amounts of previous field experience. The effect of age and experience on recovery efficiency and depth of interpretation was studied, as well as the reactions of students to excavation of an artificial construct, and in the case of those with no previous experience, to archaeological field work in general.In addition to that section of the site devoted to problems connected with instruction, a section was designed to investigate a series of relatively simple methodological problems. Problems of stratigraphy, seriation, and relationship between size of artifact, soil color and texture, and excavation technique were investigated, with successful results. Such a site has great utility in field instruction, where its superiority over certain natural sites can be demonstrated, and in controlled investigation of various excavation and interpretive techniques. Such a site is relatively easy to construct, and the Santa Barbara laboratory site is now a continuing project.

scholarly journals Niematerialny świat Dul-dul at. O procesie zanurzania w świat Innych, o relacjach, ludziach i innych bytach

2021 ◽  
Author(s):  
Sylwia Pietrowiak
Keyword(s):  
Field Work ◽  
Spiritual Practices ◽  
Material World ◽  
The World ◽  
Non Linear ◽  
Anthropological Field Work ◽  
A Site ◽  
Ritual Site ◽  
Rela Tions ◽  
The Way

This essay is a non-linear record of memories from the author’s anthropological field- work in southern Kyrgyzstan. The research concerns a place called Dul-dul at, a site of petroglyphs with a dominant motif of animals interpreted as a pair of horses. The area at the foot of the rock with petroglyphs is also a pilgrimage and ritual site for healing and spiritual practices. The narrative of memories shows the transformation not only of the place of research, but also of the researcher: between the first stay (in 2006) to the last (in 2019). Subsequent studies reveal the dependencies of people involved in social rela- tions on the material and non-material world of Dul-dul at. Consecutive memories reveal layers of knowledge and ignorance, and how the researcher penetrates the community of the Others and the way they perceive the world.

Eels Under Standing Wave Conditions

1982 ◽  
Vol 40 ◽  
pp. 492-495
Author(s):  
O.L. Krivanek ◽  
J. TaftØ
Keyword(s):  
Standing Wave ◽  
Wave Conditions ◽  
Set Up ◽  
A Site ◽  
Complex Crystal

It is well known that a standing electron wavefield can be set up in a crystal such that its intensity peaks at the atomic sites or between the sites or in the case of more complex crystal, at one or another type of a site. The effect is usually referred to as channelling but this term is not entirely appropriate; by analogy with the more established particle channelling, electrons would have to be described as channelling either through the channels or through the channel walls, depending on the diffraction conditions.

Head Size and DNA Content in Bacteriophage T4

1972 ◽  
Vol 30 ◽  
pp. 200-201
Author(s):  
Fred Eiserling ◽  
A. H. Doermann ◽  
Linde Boehner
Keyword(s):  
Electron Microscopy ◽  
Dna Content ◽  
Bacteriophage T4 ◽  
Head Size ◽  
Virus Particles ◽  
Altered Protein ◽  
A Cell ◽  
Bacterial Viruses ◽  
A Site ◽  
Protein Shell

The control of form or shape inheritance can be approached by studying the morphogenesis of bacterial viruses. Shape variants of bacteriophage T4 with altered protein shell (capsid) size and nucleic acid (DNA) content have been found by electron microscopy, and a mutant (E920g in gene 66) controlling head size has been described. This mutant produces short-headed particles which contain 2/3 the normal DNA content and which are non-viable when only one particle infects a cell (Fig. 1).We report here the isolation of a new mutant (191c) which also appears to be in gene 66 but at a site distinct from E920g. The most striking phenotype of the mutant is the production of about 10% of the phage yield as “giant” virus particles, from 3 to 8 times longer than normal phage (Fig. 2).

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