NEW DISCOVERIES IN CHOUKOUTIEN 1933-1934~1

Since the publication, in June 1933, of "Fossil Man in China", up to the present date (September 1934), a series of new observations have been made in the course of the Chonkoutien excavations. Although these new     

THE LATE CENOZOIC FORMATIONS OF S.E.SHANSI

Up to 1931 nothing was positively known concerning the Cenozoicformations eventually preserved in S.E.Shansi.The large area bounded by     

THE LATE CENOZOIC FORMATIONS OF S.E.SHANSI

Up to 1931 nothing was positively known concerning the Cenozoicformations eventually preserved in S.E.Shansi.The large area bounded by     

INTERNATIONAL LONGITUDE DETERMINATION THE WORK IN CHINA

At the Cambrige meeting of the International Astronomical Union, inJuly 1925, it was agreed that an extensive scheme of longitude dpterminationwas to be carried out in October and November of the last year.     

NOTE SUR LA STRUCTURE DES MONTAGNES A L''OUEST DE LINN MING KWAN (CHIHLI MERIDIONAL).

En Fevrier 1924, j'ai eu l'occasion, (guide par le P. Charvet, professeur a l'Institut des Hautes Etudes Industrielles de Tientsin), de traverser la region montagneuse comprise entre Linn Ming Kwan et le Zeu Chan, petit massif situe a une trentaine de kilometres ouest de Linn Ming     

GEOLOGY OF NORTHERN CHIHLI AND EASTERN MONGOLIA.

During the last spring (April-May 1924), we have, F. Licent and I crossed the Northern Chihli and the eastern part of the Inner Mongolia.     

An Introduction to 2-CCD Digital Particle Image Velocimetry System and Its Application in Ocean Engineering

The basic principle of particle image velocinmetry(PIV)is described.When a PIV image is an-alyzed by the method of auto-correlation,there is a direction ambiguity of 180~0 in velocity measurement.The problem can be solved by using"Image Shifting Technique",but this makes devices much complicat-ed and difficult to control.A new arrangement of 2-CCD(Charge Coupled Device)fully digitized PIV sys-tem,which can also solve the problem successfully,is introduced in the paper.As an example of applica-tion of the system,an experimental result of flow field around a horizontal cylinder in wave is presented.     

高能波控陆架的风暴沉积和风暴层序——以澳大利亚东南部陆架为例

根据浅层地震和钻孔资科,将澳大利亚东南部研究地区高能波控陆架风暴沉积分为直立风暴层、叠瓦状风暴层、无序风暴层、水平风暴层和纹层状风暴层等五类。各类风暴层及风暴层与非风暴层组合而成悬移风暴层序、悬移-推移混合风暴层序和推移风暴层序三大类。中陆架风暴沉积与现今近岸和水下岸坡相似,岩性、岩相和古生物属海岸带,风暴沉积厚,底板埋深大,组成物质粗。推断中陆架风暴沉积当形成于冰后期海侵、该地带处在近岸带和水下岸坡环境时,此时海面上升速度可能减缓,或趋近于零,甚至可能有短时间的下降。     

Conservation of Mediterranean seascapes: analyses of existing protection schemes

Marine protected areas (MPAs) are aimed at managing and protecting marine environments. Their design, however, often disregards both a thorough knowledge of the distribution of habitats and assemblages and the use of proper experimental evaluations of the efficacy of MPAs by comparing protected vs. unprotected zones. About 200 MPAs have been recently instituted in the Mediterranean area, but the evidence of their efficacy is scant. The MPA of Torre Guaceto (Southern Adriatic Sea, Italy) is one of the rare cases of effective protection enforcement. The reserve was instituted more than 10 years ago, a period currently considered as sufficient to show responses by organisms to protection. The MPA is divided into a C zone, the general reserve, where many activities are permitted, a B zone, the partial reserve where restrictions increase and two A zones, the integral reserve where access is prohibited. The goals of the paper were to map the distribution of benthic assemblages to assess if they were properly represented in the differently protected zones, and to test the efficacy of protection by quantifying possible differences between the assemblages in two control areas and in the two A zones, where human impact is completely excluded. The analysis of habitat and assemblage distribution within the MPA showed that the zones with total protection do not include most valuable environmental types. Most of the considered variables (i.e. cover of substratum, number of taxa, and average abundance of the most common taxa) were not significantly different in and out of the A zones, at each time of sampling. Results, however, suggested a possible effect of protection in modifying patterns of abundance of sponges under Cystoseira canopy (more abundant in the fully protected zone). In the subtidal habitat, differences were found in the structure of the whole assemblage and in the abundance of encrusting coralline red algae (more abundant outside the fully protected area). Notwithstanding the correct general methodology employed in the study, a lack of statistical power could have a role in preventing the detection of ecologically relevant effects of protection. In some instances, data pooling allowed a discrimination between cases where there was clearly no effect of protection and cases where there might be. On this basis, the optimization of this experimental design should be considered in further studies. In any case, if the goals of MPAs have not been clearly stated, efficacy of protection might prove very difficult to test even with the use of sound experimental designs.