Sorted Bedform Model. The Sorted Bedform Model (SBM) addresses the formation mechanism for sorted bedforms present on inner continental shelf environments.

sorted bed forms formationcontinental shelf



Initial contribute: 2021-09-16


Duke University
Is authorship not correct? Feed back


Application-focused categoriesNatural-perspectiveLand regions
Application-focused categoriesNatural-perspectiveOcean regions

Detailed Description

English {{currentDetailLanguage}} English

Because the term ‘‘rippled scour depression’’ is associated with the genetic, cross-shelf process interpretation of Cacchione et al. (1984), and because the most recent surveys have shown that they are not simple depressions, we adopt the term ‘‘sorted bedforms’’ to describe the features off Wrightsville Beach and elsewhere.

Swift and Freeland (1978)referred to similar features off the northern North Carolina coast as bedforms, but suggested no general mechanism to generate the marked sorting of sediment sizes associated with them. They referred to an analytical model for the growth of topographic bed- forms in a unidirectional current (Smith, 1970). However, inner-shelf sorted features are primarily compositional phenomena, exhibiting very subtle topographic expression with relief on the order of a meter over widths on the order of hundreds of meters. If topographic interactions drove the development of the features, they would be expected to attain more than subtle relief in at least some locations.

The widespread occurrence of sorted bedforms on the shoreface and inner continental shelf suggests that oceanographic processes are responsible for their formation and evolution. They are apparently independent of geologic factors, such as underlying stratigraphic framework or sediment supply, although both factors may play an important role in the overall settings in which they occur. Studies off Wrightsville Beach suggest that these features are not ephemeral, and indeed persist through a wide range of storm and fairweather conditions over interannual and long- er time scales.

In the next section we describe observations that, along with those above, motivate a hypothesis for a mechanism that could lead to the self- organization of sorted bedforms. (‘‘Self-organization’’ refers to pattern formation caused by interactions within a system, as opposed to being dictated by the patterns of the forcing or the initial conditions.) This conceptual model postulates that sorted bedforms are a robust result of the interaction of waves, mean currents, and poorly sorted bed material, in a moderately high-energy environment (outside the surf zone).

Quoted from: A new hypothesis and exploratory model for the formation of large-scale inner-shelf sediment sorting and ‘‘rippled scour depressions’’





Initial contribute : 2021-09-16



Duke University
Is authorship not correct? Feed back


Last modifier
Yihan Zhang
Last modify time
Modify times
View History

QR Code


{{'; ')}}



Drop the file here, orclick to upload.
Select From My Space
+ add


Cancel Submit
{{htmlJSON.Cancel}} {{htmlJSON.Submit}}
{{htmlJSON.Localizations}} + {{htmlJSON.Add}}
{{ item.label }} {{ item.value }}
{{htmlJSON.Cancel}} {{htmlJSON.Submit}}
名称 别名 {{tag}} +
系列名 版本号 目的 修改内容 创建/修改日期 作者
摘要 详细描述
{{tag}} + 添加关键字
* 时间参考系
* 空间参考系类型 * 空间参考系名称

起始日期 终止日期 进展 开发者
* 是否开源 * 访问方式 * 使用方式 开源协议 * 传输方式 * 获取地址 * 发布日期 * 发布者

编号 目的 修改内容 创建/修改日期 作者

时间分辨率 时间尺度 时间步长 时间范围 空间维度 格网类型 空间分辨率 空间尺度 空间范围
{{tag}} +
* 类型

* 名称 * 描述
示例描述 * 名称 * 类型 * 值/链接 上传

{{htmlJSON.Cancel}} {{htmlJSON.Submit}}
Title Author Date Journal Volume(Issue) Pages Links Doi Operation
{{htmlJSON.Cancel}} {{htmlJSON.Submit}}
{{htmlJSON.Add}} {{htmlJSON.Cancel}}


Authors:  {{articleUploading.authors[0]}}, {{articleUploading.authors[1]}}, {{articleUploading.authors[2]}}, et al.

Journal:   {{articleUploading.journal}}

Date:   {{}}

Page range:   {{articleUploading.pageRange}}

Link:   {{}}

DOI:   {{articleUploading.doi}}

Yes, this is it Cancel

The article {{articleUploading.title}} has been uploaded yet.

{{htmlJSON.Cancel}} {{htmlJSON.Confirm}}