General cargo and containership emergent routes: A complex networks description

Montes, Carlos Pais; Seoane, María Jesús Freire; Laxe, Fernando González

doi:10.1016/j.tranpol.2012.06.022

Cited by 60 publications

(30 citation statements)

References 26 publications

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“…port connectivity, centrality, clusters). Similar 'complex network' descriptions of container shipping can be found in Ducruet and Nottebom (2010) and Montes, Seoane and Laxe (2012) and of tramp shipping in Moon, Xiu and Wang (2015). RigotMüller et al (2012) investigate the mapping of maritime freight flows in and out of the UK, considering all commodities and ship types.…”

Section: Literature Reviewsupporting

confidence: 55%

Are AIS-based trade volume estimates reliable? The case of crude oil exports

Ådland

Jia

Strandenes

2017

Maritime Policy & Management

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Most global trade statistics in the public domain refer to official customs data, which are not generally available on a micro (individual cargo) level. With the increasing availability and completeness of ship positioning data from the global Automated Identification System (AIS), it is possible to derive more timely and detailed trade statistics for homogeneous commodity groups. The objective of this paper is twofold: 1) to compare the accuracy of AIS-derived trade statistics to official customs data in the crude oil market and 2) to add a breakdown of trade by vessel size over time. We find that while AIS-derived data for seaborne crude exports show good alignment with official export numbers in aggregate, there are substantial temporal and geographical differences across countries and time due to the use of pipelines and transshipment in parts of the supply chain. We highlight the challenges in properly structuring and aggregating micro-level cargo data. Our findings are important for the proper derivation of shipping demand from trade data.

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Section: Literature Reviewsupporting

confidence: 55%

Are AIS-based trade volume estimates reliable? The case of crude oil exports

Ådland

Jia

Strandenes

2017

Maritime Policy & Management

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“…Although complex network theory has been applied to other transport networks (road, rail and air) long before 2010, it was the evolvement of commercial ship movement databases, made possible through Automatic Identification System (AIS) technology, that finally made the analysis of the maritime networks an empirical reality [21]. A number of these empirical studies outline the data acquisition and processing methodologies, contributing towards the establishment of a standard methodology [19,21,29,43].…”

Section: Applications Of Complex Network Theory In the Maritime Domainmentioning

confidence: 99%

“…Their work shows that a network-based approach could be far more useful in the study and prediction of bioinvasion through maritime trade than the state-of-practice gravity models. Pais Montes et al [43] build on these works investigating changes in the container and general cargo markets over three years from 2008 to 2010. Their study also uses ship movements from the Lloyd's database and compares the two networks in terms of betweenness centrality, average path length, density, average clustering coefficient and degree-based topologies.…”

Section: Applications Of Complex Network Theory In the Maritime Domainmentioning

confidence: 99%

The vulnerability of the global container shipping network to targeted link disruption

Viljoen

Joubert

2016

Physica A: Statistical Mechanics and its Applications

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Using complex network theory to describe the relational geography of maritime networks has provided great insights regarding their hierarchy and evolution over the past two decades. Unlike applications in other transport fields, notably air transport, complex network theory has had limited application in studying the vulnerability of maritime networks. This study uses targeted link disruption to investigate the strategy specific vulnerability of the network. Although nodal infrastructure such as ports can render a network vulnerable as a result of labour strikes, trade embargoes or natural disasters, it is the shipping lines connecting the ports that are more probably disrupted, either from within the industry, or outside. In this paper we apply and evaluate two link-based disruption strategies on the global container shipping network, one based on link betweenness, and the other on link salience, to emulate the impact of large-scale service reconfiguration affecting priority links. The results show that the network is by and large robust to such reconfiguration. Meanwhile the flexibility of the network is reduced by both strategies, but to a greater degree by betweenness, resulting in a reduction of transshipment and dynamic rerouting potential amongst the busiest port regions. The results further show that the salience strategy is highly effective in reducing the commonality of shortest path sets, thereby diminishing opportunities for freight consolidation and scale economies.

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“…Esto posibilita la delimitación de jerarquías nodales no solo en términos de volumen anual, sino también en lo que respecta a la influencia local/regional/global del nodo logístico, que podría ser muy distinta a lo que su rango en términos de total throughput pudiera estar sugiriendo (Pais-Montes et al, 2012).…”

Section: Metodologíaunclassified

“…Pero, como ya ha quedado sólidamente establecido en lo relativo al transporte marí-timo (Ducruet & Notteboom, 2012;Pais-Montes et al, 2012), el análisis del desempeño de los nodos logísticos debe incluir, no solo el seguimiento estadístico del volumen total de mercancías movidas anualmente, sino también una cuantificación de la influencia que esas posiciones ostentan en la red global definida por la cadena de suministro.…”

Section: Introductionunclassified

La conectividad en el sector español de carga aérea: 2004-2014

Montes

Seoane

Laxe

2018

REPPP

Self Cite

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El segmento de las aerolíneas de carga, como demandante y usuario de servicios aeroportuarios, ha crecido en las dos últimas décadas hasta convertirse en parte fundamental de la red global de suministro en España. El objetivo de este artículo es analizar la evolución de la conectividad de este modo logístico, en el período 2004-2014, utilizando la base de datos del Observatorio para el Transporte y la Logística de España sobre posiciones aeroportuarias de carga de origen y destino. Los resultados indican que, en los mayores aeropuertos españoles (Madrid, Barcelona, Zaragoza y Vitoria), ha existido una recuperación del volumen de carga operado en los niveles pre-crisis, que no ha ido acompañada, no obstante, de una recuperación en términos de centralidad, con la excepción de Zaragoza, que es la infraestructura que muestra, actualmente, mayor resiliencia y mejores perspectivas en este aspecto.

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General cargo and containership emergent routes: A complex networks description

Cited by 60 publications

References 26 publications

Are AIS-based trade volume estimates reliable? The case of crude oil exports

Are AIS-based trade volume estimates reliable? The case of crude oil exports

The vulnerability of the global container shipping network to targeted link disruption

La conectividad en el sector español de carga aérea: 2004-2014

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