Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1080/03736245.2021.1876753 |
| The relationship between barchan size and barchan morphology: a case study from Northern Namibia | |
| van der Merwe, Barend Jacobus | |
| 通讯作者 | van der Merwe, BJ (corresponding author), Univ Pretoria, Fac Nat & Agr Sci, Geog Geoinformat & Meteorol, Geog Bldg,Hatfield Campus, Pretoria, South Africa. |
| 来源期刊 | SOUTH AFRICAN GEOGRAPHICAL JOURNAL
 |
| ISSN | 0373-6245 |
| EISSN | 2151-2418 |
| 出版年 | 2021 |
| 卷号 | 103期号:1页码:119-138 |
| 英文摘要 | Landform allometry has been a topic of inquiry since at least the 1970s. In this study, the presence of allometry is investigated for a barchan dunefield in northern Namibia. Using a combination of traditional morphometric parameters and techniques borrowed from geometric morphometrics it is shown that barchan allometry is present. This allometry is a combination of positive and negative allometry. Barchans show a definite change in mean shape as the size of the dune increases becoming more asymmetric. Differences in horn length, along with dune width, show positive allometry indicating that it changes faster than the shape changes. Barchan bilateral asymmetry and stoss length show negative allometry indicating that changes in these variables lag behind changes in size. Together, these results hint at the possible presence of threshold size differences beyond which distinct shape changes can be observed. |
| 英文关键词 | Barchan allometry shape size geometric Morphometrics |
| 类型 | Article |
| 语种 | 英语 |
| 收录类别 | SSCI |
| WOS记录号 | WOS:000614181000001 |
| WOS关键词 | SAND DUNES ; GEOMETRIC MORPHOMETRICS ; ALLOMETRIC GROWTH ; CRESCENTIC DUNES ; IMPERIAL-VALLEY ; MIGRATION ; SHAPE ; DESERT ; MODEL ; ASYMMETRY |
| WOS类目 | Geography |
| WOS研究方向 | Geography |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/351795 |
| 作者单位 | [van der Merwe, Barend Jacobus] Univ Pretoria, Dept Geog Geoinformat & Meteorol, Pretoria, South Africa |
| 推荐引用方式 GB/T 7714 | van der Merwe, Barend Jacobus. The relationship between barchan size and barchan morphology: a case study from Northern Namibia[J],2021,103(1):119-138. |
| APA | van der Merwe, Barend Jacobus.(2021).The relationship between barchan size and barchan morphology: a case study from Northern Namibia.SOUTH AFRICAN GEOGRAPHICAL JOURNAL,103(1),119-138. |
| MLA | van der Merwe, Barend Jacobus."The relationship between barchan size and barchan morphology: a case study from Northern Namibia".SOUTH AFRICAN GEOGRAPHICAL JOURNAL 103.1(2021):119-138. |
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