Radon measurements in the cave houses of Crevillente (Spain)

This paper focuses on the cave houses of Crevillente (Spain) as a traditional housing experience which takes advantage of local environmental conditions through simple architectural proposals, paying particular attention to the presence of radon gas inside these underground constructions. Our aim is twofold: first, to analyse the architectural conditions of the different excavated typologies found in the municipality and second, to relate them to the existing radon gas levels after checking internal concentration by means of E-PERM® long-term devices placed inside the cave houses in 2011. The measurements corresponding to the main typologies in normal use conditions show that the highest values are 881.9 Bq/m3 in the cave typology, 484.1 Bq/m3 in the cave + attached constructions typology and 373.4 Bq/m3 in the cave + house typology, with geometric mean values of 572.1, 114.0 and 75.5 Bq/m3, respectively. It can be inferred from these results that cave house levels sometimes exceed those included in the 90/143/Euratom European Commission Recommendation on the protection of the public against indoor exposure to radon. The reason why cave houses are more susceptible to radon accumulation in their spaces lies in their direct and permanent contact with the ground where they are located.

The fauna from the terminal Pleistocene of Palegawra Cave, a Zarzian occupation site in northeastern Iraq / Priscilla F. Turnbull -- and Charles A. Reed --.

v.63:no.3(1974)

Point clouds of measurements in the Dechen Cave near Iserlohn, Germany

Modeling natural phenomena from 3D information enhances our understanding of the environment. Dense 3D point clouds are increasingly used as highly detailed input datasets. In addition to the capturing techniques of point clouds with LiDAR, low-cost sensors have been released in the last few years providing access to new research fields and facilitating 3D data acquisition for a broader range of applications. This letter presents an analysis of different speleothem features using 3D point clouds acquired with the gaming device Microsoft® Kinect. We compare the Kinect sensor with terrestrial LiDAR reference measurements using the KinFu pipeline for capturing complete 3D objects (< 4m**3). The results demonstrate the suitability of the Kinect to capture flowstone walls and to derive morphometric parameters of cave features. Although the chosen capturing strategy (KinFu) reveals a high correlation (R2=0.92) of stalagmite morphometry along the vertical object axis, a systematic overestimation (22% for radii and 44% for volume) is found. The comparison of flowstone wall datasets predominantly shows low differences (mean of 1 mm with 7 mm standard deviation) of the order of the Kinect depth precision. For both objects the major differences occur at strongly varying and curved surface structures (e.g. with fine concave parts).

The Pleistocene fauna of Hawver Cave /

Cover title.

Request for assistance in preventing deaths and injuries from excavation cave-ins.

Mode of access: Internet.

Excavation and resource evaluation of sites 23PU2, 23PU255 and 23PU235 (Miller Cave complex), Fort Leonard Wood, Pulaski County, Missouri /

"For submission to U.S. Army Construction Engineering Research Laboratory, Champaign, Illinois."

The Cave of Despair

Benjamin West; 2 ft. 1/64 in.x 2 ft. 6 in.; oil on canvas

Location of uranium deposits in southwestern North Dakota and the Cave Hills and Slim Buttes Areas, Harding County, South Dakota.

"July, 1956."

Report on Platt and Wind cave national parks, Sullys hill park, Casa Grande ruin, Muir woods, Petrified forest, and other national monuments, including list of bird reserves, 1911-1913.

Electronic text and image data

The book of the cave Gaurisankarguhā : being the authentic account of a pilgrimage to the Gaurisankar cave /

Mode of access: Internet.

Evidences of early occupation in Sandia cave, New Mexico, and other sites in the Sandia-Manzano region,

Publication 3636.

Cougar Mountain cave in south central Oregon.

Mode of access: Internet.

A romance of the old cave mill. A study in ethics.

Wright III, 2961.

Investigations in Russell Cave; Russell Cave National Monument, Alabama,

Mode of access: Internet.